04/07/2014 - PacketPLANNING COMMISSION AGENDA – APRIL 7, 2014
City of Tigard | 13125 SW Hall Blvd., Tigard, OR 97223 | 503-639-4171 | www.tigard-or.gov | Page 1 of 1
City of Tigard
Planning Commission Agenda
MEETING DATE: April 7, 2014; 7:00 p.m.
MEETING LOCATION: City of Tigard – Town Hall
13125 SW Hall Blvd., Tigard, OR 97223
1. CALL TO ORDER 7:00 p.m.
2. ROLL CALL 7:00 p.m.
3. COMMUNICATIONS 7:02 p.m.
4. CONSIDER MINUTES 7:03 p.m.
5. PUBLIC HEARING – COSTCO GAS STATION
CUP2013-00002 7:05 p.m.
The applicant is requesting a conditional use permit and Tigard Triangle Design Evaluation Team approval
for the construction of a members-only retail fuel station located at the existing Costco site. The station is
proposed at the northeast corner of the site currently used for parking. The facility consists of a 73 foot by
102 foot canopy with three fueling islands, nine fuel dispensers and five underground storage tanks. The
proposal also includes reconfiguration of the parking area surrounding the proposed fuel station and
landscaping.
6. OTHER BUSINESS 8:05 p.m.
7. ADJOURNMENT 8:15 p.m.
FILENAME: H:\PROJFILE\11367 - TIGARD COSTCO GASOLINE ADDITION\CONTRIBUTIONS\MEMO\TIGARD FUEL
STATION_OR99W&DARTMOUTH CONTRIBUTIONS_UPDATED.DOCX
MEMORANDUM
Date: April 1st, 2014 Project #: 11367
To: Kim McMillan; Mike McCarthy; Agnes Kowacz; Tom McGuire; City of Tigard
cc: David Rogers, Costco Wholesale
Chris Ferko; Angelo Bolonga, Barghausen Consulting Engineers
From: Sonia Daleiden, PE, PTOE; Kelly Laustsen; Kittelson &Associates, Inc.
Project: Tigard Costco Gasoline Addition
Subject: Proposed Contribution towards Dartmouth/OR 99W Intersection
Following-up on our meeting with the City of Tigard on March 3rd, 2014 and subsequent meeting on
March 24th, 2014, this memorandum presents a proposal for mitigating the proposed Costco Gasoline
fuel station project impacts at the Dartmouth/OR 99W intersection. It presents a specific project to
mitigate the fuel station’s impact at the intersection, which includes construction of northbound and
southbound right-turn lanes at the intersection. It is our understanding that the City is pursuing
conversations with ODOT and the adjacent property owner to determine the feasibility of acquiring
necessary ROW and approval for the turn-lanes. In the event that Costco is unable to construct the
proposed turn-lanes, Costco will contribute the projected cost of the improvements ($237,833) for use
in design and construction of future improvements at Dartmouth/99W. If applicable, Costco will also
contribute $78,400 to account for ROW costs associated with the turn-lane improvements if the City
deems appropriate.
BACKGROUND
Costco is proposing to add an 18 fueling position Costco Gasoline fuel station to the existing Costco site
in Tigard, Oregon. The fuel station is projected to add a total of 90 net new weekday PM peak hour trip
ends and approximately 110 net new weekend peak hour trip ends. The current City of Tigard staff
report includes a condition of approval requiring Costco to contribute $525,000 towards the
intersection of SW Dartmouth Street and Highway 99W. There is not an ordinance for contributions to
a specific long-term project with associated defined cost and capacity improvements for the
intersection (only a generic project with a hypothetical cost outlined in the City’s TSP). Furthermore,
the intersection is forecast to meet adopted ODOT operational standards, even with the Costco project
in place, once currently funded and designed near-term improvements that are under construction are
in place. Even though the overall intersection will meet the adopted prevailing ODOT operational
standards with traffic from the Costco project, Costco has in good faith worked with the City of Tigard
Tigard Costco Gasoline Addition Project #: 11367
April 1, 2014 Page 2
Kittelson & Associates, Inc. Portland, Oregon
to provide contributions to a long-term future project at the Dartmouth/99W intersection in order to
mitigate the project’s specific impacts to individual movements at that intersection which operate
overcapacity.
Current funded improvements at the intersection include an additional westbound through lane on OR
99W, extension of queue storage for the northbound left-turn lanes on SW Dartmouth Street, and
conversion of the left-turns from Dartmouth Street to protected phasing (the north and south legs are
currently split phasing). These improvements are currently under construction.
IMPROVEMENTS REQUIRED TO MITIGATE PROJECT IMPACTS TO INDIVIDUAL
MOVEMENTS
As noted above, with the currently funded improvements in place the intersection of Dartmouth
Street/99W will meet ODOT operational standards even with traffic from the Costco project. As such,
this investigation focused on mitigating individual movements at the intersection where the Costco
project is adding additional traffic to movements that are forecast to operate over capacity.
Operational analysis shows that adding an exclusive southbound right-turn lane plus an exclusive
northbound right-turn lane at the Dartmouth/99W intersection would mitigate the project’s impacts
for the intersection movements that are operating overcapacity and improve operations (2014 total
traffic conditions) to equivalent or better than those without the project (2014 background conditions).
The operational impact of these improvements is shown in Table 1 and Table 2 for the weekday PM
peak hour and weekend midday peak hour, respectively. The operations under the 2014 background
conditions (without proposed fuel station) are compared to the 2014 mitigated total traffic conditions
(with proposed fuel station and turn-lane improvements). The difference in volume-to-capacity ratio
and delay between the scenarios is also provided. A negative value for the change indicates an
improvement in operations from the background to mitigated total traffic conditions.
Table 1 2014 Weekday PM Peak Hour Operations at Dartmouth/OR 99W
2014 Background Conditions1
Overall NBL NBT/NBR SBL SBT/SBR
V/C2 0.76 1.19 1.24 1.14 1.18
Delay (s) 58.4 165.1 198.7 186.6 199.8
2014 Total Traffic Conditions – Mitigated (NBR and SBR) 1
Overall NBL NBT NBR SBL SBT SBR
V/C2 0.76 1.17 0.92 0.08 1.01 1.12 0.03
Delay (s) 53.6 155.5 96.2 54.5 140.6 187.9 62.8
Change (Total Traffic Conditions minus Background Conditions)
Overall NBL NBT NBR SBL SBT SBR
V/C2 0 -0.02 -0.32 -1.16 -0.13 -0.06 -1.15
Delay (s) -4.8 -9.6 -102.5 -144.2 -46 -11.9 -137
1 Both scenarios include conversion to protected phasing on Dartmouth and do not alter the timing for OR 99W
2 v/c = volume-to-capacity ratio
Tigard Costco Gasoline Addition Project #: 11367
April 1, 2014 Page 3
Kittelson & Associates, Inc. Portland, Oregon
Table 2 2014 Weekend Midday Peak Hour Operations at Dartmouth/OR 99W
2014 Background Conditions
Overall NBL NBT/NBR SBL SBT/SBR
V/C2 0.83 1.13 0.84 0.68 1.13
Delay (s) 51.1 133.5 71.5 63.1 163.6
2014 Total Traffic Conditions – Mitigated (NBR and SBR) 1
Overall NBL NBT NBR SBL SBT SBR
V/C2 0.84 1.08 0.63 0.11 0.47 1 0.05
Delay (s) 48.0 110.8 60.5 52.8 49.6 130.9 55.2
Change (Total Traffic Conditions minus Background Conditions) 1
Overall NBL NBT NBR SBL SBT SBR
V/C2 0.01 -0.05 -0.21 -0.73 -0.21 -0.13 -1.08
Delay (s) -3.1 -22.7 -11 -18.7 -13.5 -32.7 -108.4
1 Both scenarios include conversion to protected phasing on Dartmouth and do not alter the timing for OR 99W
2 v/c = volume-to-capacity ratio
As seen in the tables, the combination of an exclusive southbound right-turn lane plus an exclusive
northbound right-turn lane would effectively mitigate the impact of the Costco fuel station. Analysis
sheets for all scenarios are provided in Appendix A.
A concept sketch showing the proposed improvements is provided in Figure 1. The improvements were
designed to tie-in with the improvements currently underway at the intersection, shown in the plans in
Appendix B. Based on discussions with ODOT, the plans are currently being updated to reflect protected
left-turn phasing on the Dartmouth approaches. Note that the sketch in Figure 1 is provided for
informational purposes to illustrate the improvements and is not intended to serve as a construction
document. Further refined plans will be required to construct the turn-lanes.
COST ESTIMATE
The City is currently engaged in discussions with ODOT and the property owner on the northwest side
of the intersection to assess the feasibility of acquiring the necessary ROW and permissions to
construct the right-turn lanes. While ROW exists to construct the northbound tight-turn lane, the
southbound right-turn lane requires the acquisition of ROW from the property owner on the northwest
side of the intersection.
In the event that construction proves infeasible, Costco proposes to contribute the cost of the right-
turn lanes, considered a fair and equitable contribution to mitigate Costco’s impact. Therefore, a cost
estimate summary for the turn-lane improvements was developed and is provided in Table 3. The cost
estimate also includes a tree impact fee ($537 per tree as provided by City of Tigard Staff). The cost
estimate also accounts for signal modifications to allow for right-turn overlaps in both directions. In the
event that ROW is not donated but must be purchased to construct the southbound turn-lane, a ROW
cost is also provided. Full details of the cost estimate are provided in Appendix C.
Tigard Costco Gasoline Addition Project #: 11367
April 1, 2014 Page 4
Kittelson & Associates, Inc. Portland, Oregon
Table 3 Cost Estimate for Dartmouth/OR 99W Improvements
Item Cost
Southbound right-turn lane $174,250
Northbound right-turn lane $58,750
Displaced tree contribution $4,833
Total $237,833
ROW Cost (associated with southbound right-turn lane)1 $78,400
1 Assumes a ROW cost of $40/foot
As seen in the table, the total cost of the improvements needed to mitigate the project’s impact at
Dartmouth/99W is $237,833. An additional $78,400 may be required to purchase ROW on the
northwest side of the intersection. This is significantly less than the $525,000 requested by the City,
which is based only on a generic and undefined project cost estimate of $6 million listed in the City's
TSP and an unsupported estimated benefit from that project of additional capacity for 1,400 trips per
hour. Costco requests that this revised amount, which is fair, equitable, and based on a specific
mitigation with a defined cost, be used as the value of Costco’s contribution to future improvements at
the Dartmouth/99W intersection (if the turn-lanes prove infeasible to construct). The City may use
these funds to construct improvements at Dartmouth/99W or towards another project in the
immediate area they see more fit. This contribution will be TDT creditable.
Please let us know if you have any questions or if there is any additional information you require. If not,
we trust that the staff report for the upcoming Planning Commission meeting will be updated to
include that Costco will construct northbound and southbound right-turn lanes at Dartmouth/99W. In
the event that construction of the turn-lanes become infeasible (due to the City’s conversations with
ODOT and the adjacent property owner), Costco will instead contribute the $237,833 equivalent cost of
the improvements (and potential $78,400 to account for ROW if the City deems appropriate).
Figure 1: Dartmouth/OR99 W Improvements
Northbound right-turn lane & Southbound right-turn lane
Existing sidewalk
OR 99W
S
W
D
a
r
t
m
o
u
t
h
S
t
OR 99W
OR 99W
New pavement
New sidewalk
Additional ROW
New pavement
Relocated pedestrian
pedestal
Rehabilitated
pavement
Appendix A Analysis Sheets
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/5/2014
11367 - Tigard Costco Gasoline Addition 3/3/2014 Year 2014 Background Conditions - Weekday PM Peak Hour - PROTSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)831241444881727115422089314111537
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.000.951.001.000.910.971.001.001.00
Frpb, ped/bikes1.001.000.981.001.001.000.991.001.00
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.000.951.000.96
Flt Protected0.951.001.000.951.000.951.000.951.00
Satd. Flow (prot)180535051576180550803502179618051795
Flt Permitted0.951.001.000.951.000.951.000.951.00
Satd. Flow (perm)180535051576180550803502179618051795
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)861293462921799115652179714712039
RTOR Reduction (vph)001860000110080
Lane Group Flow (vph)861293276921810056530301471510
Confl. Peds. (#/hr)211288
Confl. Bikes (#/hr)32
Heavy Vehicles (%)0%3%0%0%2%0%0%0%0%0%0%8%
Turn TypeProtPermProtProtProt
Protected Phases52163874
Permitted Phases2
Actuated Green, G (s)10.983.283.211.383.618.518.59.59.5
Effective Green, g (s)10.983.783.711.384.119.019.010.010.0
Actuated g/C Ratio0.080.600.600.080.600.140.140.070.07
Clearance Time (s)4.04.54.54.04.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.30.2
Lane Grp Cap (vph)14120959421463052475244129128
v/s Ratio Prot0.05c0.37c0.050.360.16c0.170.08c0.08
v/s Ratio Perm0.18
v/c Ratio0.610.620.290.630.591.191.241.141.18
Uniform Delay, d162.517.913.762.317.360.560.565.065.0
Progression Factor0.880.882.351.310.691.001.001.001.00
Incremental Delay, d24.41.00.65.60.7104.6138.2121.6134.8
Delay (s)59.416.832.987.012.6165.1198.7186.6199.8
Level of ServiceEBCFBFFFF
Approach Delay (s)22.816.2177.1193.5
Approach LOSCBFF
Intersection Summary
HCM Average Control Delay58.4HCM Level of ServiceE
HCM Volume to Capacity ratio0.76
Actuated Cycle Length (s) 140.0Sum of lost time (s)16.0
Intersection Capacity Utilization77.2%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/5/2014
11367 - Tigard Costco Gasoline Addition 3/4/2014 Year 2014 Total Traffic Conditions - Weekday PM Peak Hour - NBR & SBRSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)83121649112017021159021112514111737
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.54.04.04.5
Lane Util. Factor1.000.951.001.000.910.971.001.001.001.001.00
Frpb, ped/bikes1.001.000.981.001.001.001.000.971.001.001.00
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.001.000.851.001.000.85
Flt Protected0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (prot)18053505157618055080350219001565180519001495
Flt Permitted0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (perm)18053505157618055080350219001565180519001495
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)86126751112517731161522013014712239
RTOR Reduction (vph)00211000001140037
Lane Group Flow (vph)86126730012517840615220161471222
Confl. Peds. (#/hr)211288
Confl. Bikes (#/hr)32
Heavy Vehicles (%)0%3%0%0%2%0%0%0%0%0%0%8%
Turn TypeProtPermProtProtPermProtPerm
Protected Phases52163874
Permitted Phases2 84
Actuated Green, G (s)10.981.881.812.783.620.517.217.210.87.57.5
Effective Green, g (s)10.982.382.312.784.121.017.717.211.38.07.5
Actuated g/C Ratio0.080.590.590.090.600.150.130.120.080.060.05
Clearance Time (s)4.04.54.54.04.54.54.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.32.30.20.2
Lane Grp Cap (vph)1412060926164305252524019214610980
v/s Ratio Prot0.05c0.36c0.070.35c0.180.12c0.080.06
v/s Ratio Perm0.19 0.010.00
v/c Ratio0.610.620.320.760.581.170.920.081.011.120.03
Uniform Delay, d162.518.614.762.217.259.560.454.464.366.062.8
Progression Factor1.160.621.730.671.851.001.001.001.001.001.00
Incremental Delay, d24.31.00.714.20.696.035.80.176.3121.90.0
Delay (s)76.812.726.155.832.4155.596.254.5140.6187.962.8
Level of ServiceEBCECFFDFFE
Approach Delay (s)19.333.9128.4149.5
Approach LOSBCFF
Intersection Summary
HCM Average Control Delay53.6HCM Level of ServiceD
HCM Volume to Capacity ratio0.76
Actuated Cycle Length (s) 140.0Sum of lost time (s)16.0
Intersection Capacity Utilization76.6%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/4/2014
11367 - Tigard Costco Gasoline Addition 3/4/2014 Year 2014 Background Conditions - Weekend Midday Peak Hour - protected leftsSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)57113375313413743063812412513515169
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.000.951.001.000.910.971.001.001.00
Frpb, ped/bikes1.001.000.971.001.001.000.981.001.00
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.000.921.000.95
Flt Protected0.951.001.000.951.000.951.000.951.00
Satd. Flow (prot)180535051549178750663467171717701774
Flt Permitted0.951.001.000.951.000.951.000.951.00
Satd. Flow (perm)180535051549178750663467171717701774
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)59118078414014313166512913014115772
RTOR Reduction (vph)0029802002900120
Lane Group Flow (vph)5911804861401460066523001412170
Confl. Peds. (#/hr)1066101818
Confl. Bikes (#/hr)2 1
Heavy Vehicles (%)0%3%1%1%2%0%1%0%0%2%1%3%
Turn TypeProtPermProtProtProt
Protected Phases52163874
Permitted Phases2
Actuated Green, G (s)7.366.766.710.870.221.520.414.613.5
Effective Green, g (s)7.367.267.210.870.722.020.915.114.0
Actuated g/C Ratio0.060.520.520.080.540.170.160.120.11
Clearance Time (s)4.04.54.54.04.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.30.2
Lane Grp Cap (vph)10118128011482755587276206191
v/s Ratio Prot0.03c0.34c0.080.29c0.190.130.08c0.12
v/s Ratio Perm0.31
v/c Ratio0.580.650.610.950.531.130.840.681.13
Uniform Delay, d159.922.922.159.319.054.052.955.258.0
Progression Factor0.821.162.210.770.241.001.001.001.00
Incremental Delay, d24.51.32.452.60.679.518.67.9105.6
Delay (s)53.527.951.398.05.2133.571.563.1163.6
Level of ServiceDCDFAFEEF
Approach Delay (s)37.713.3116.1125.3
Approach LOSDBFF
Intersection Summary
HCM Average Control Delay51.1HCM Level of ServiceD
HCM Volume to Capacity ratio0.83
Actuated Cycle Length (s) 130.0Sum of lost time (s)16.0
Intersection Capacity Utilization82.4%ICU Level of ServiceE
Analysis Period (min)15
c Critical Lane Group
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/4/2014
11367 - Tigard Costco Gasoline Addition 3/4/2014 Year 2014 Total Traffic Conditions - Weekend Midday Peak Hour - SBR&nbrSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)57110880616813493069112715813515369
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.54.04.04.5
Lane Util. Factor1.000.951.001.000.910.971.001.001.001.001.00
Frpb, ped/bikes1.001.000.971.001.001.001.000.941.001.000.99
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.001.000.851.001.000.85
Flt Protected0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (prot)18053505154917875066346719001515177018811545
Flt Permitted0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (perm)18053505154917875066346719001515177018811545
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)59115484017514053172013216514115972
RTOR Reduction (vph)00306020001480066
Lane Group Flow (vph)59115453417514340720132171411596
Confl. Peds. (#/hr)1066101818
Confl. Bikes (#/hr)2 1
Heavy Vehicles (%)0%3%1%1%2%0%1%0%0%2%1%3%
Turn TypeProtPermProtProtPermProtPerm
Protected Phases52163874
Permitted Phases2 84
Actuated Green, G (s)7.366.766.710.870.224.513.713.721.310.510.5
Effective Green, g (s)7.367.267.210.870.725.014.213.721.811.010.5
Actuated g/C Ratio0.060.520.520.080.540.190.110.110.170.080.08
Clearance Time (s)4.04.54.54.04.54.54.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.32.30.20.2
Lane Grp Cap (vph)10118128011482755667208160297159125
v/s Ratio Prot0.030.33c0.100.28c0.210.070.08c0.08
v/s Ratio Permc0.34 0.010.00
v/c Ratio0.580.640.671.180.521.080.630.110.471.000.05
Uniform Delay, d159.922.623.159.618.952.555.452.648.959.555.1
Progression Factor0.821.162.020.770.231.001.001.001.001.001.00
Incremental Delay, d24.41.23.0126.50.658.35.10.20.771.40.1
Delay (s)53.727.549.9172.65.0110.860.552.849.6130.955.2
Level of ServiceDCDFAFEDDFE
Approach Delay (s)37.423.294.885.4
Approach LOSDCFF
Intersection Summary
HCM Average Control Delay48.0HCM Level of ServiceD
HCM Volume to Capacity ratio0.84
Actuated Cycle Length (s) 130.0Sum of lost time (s)16.0
Intersection Capacity Utilization81.0%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
Appendix B Plans for Dartmouth & OR 99W
Appendix C Cost Estimate Details
Item Unit Quantity Unit Cost Total
Excavation (Cut)cu. yd.0$15.00$0
Embankment (Fill)cu. yd.0$20.00$0
Pavement Rehabilitationsq. ft.0$4.00$0
New Pavementsq. ft.3,200$8.00$25,600
New Curblin. ft.300$15.00$4,500
New Sidewalksq. ft.1,800$5.00$9,000
Pavement markingslin. ft.250$0.50$125
Pavement markings (arrows)each6$250.00$1,500
Signage each3$500.00$1,500
Pavement Removalsq. ft.0$2.00$0
Subtotal A (Roadworks)$42,225
Storm Drainage System % of Subtotal A20%$8,445
Landscape Improvement% of Subtotal A5%$2,111
Street Lightingeach2$7,000.00$14,000
Signal and Detection, relocate PPeach1$13,000.00$13,000
Subtotal B (Other)$37,556
$79,781
Mobilization % of Subtotal 110%$7,978
Erosion Control % of Subtotal 15%$3,989
Traffic Control % of Subtotal 15%$3,989
$15,956
$95,738
Plus Contingencies % of Total 40%$38,295
Estimated Construction Cost $134,033
Architectural/Engineering% of Est. Cost20%$26,807
Construction Management % of Est. Cost 10%$13,403
$40,210
Estimated Project Cost $174,242
Estimated Professional Fees
OR 99W/DARTMOUTH
ESTIMATED PROJECT COST FOR SOUTHBOUND RIGHT TURN LANE
Proposed Road Improvements
Subtotal 1 (Subtotals A + B)
Subtotal 2 (Mobilization & Traffic Control)
Total (Subtotals 1 + 2)
11367 - Tigard Costco Fuel 4/1/2014 Page 1
Item Unit Quantity Unit Cost Total
Excavation (Cut)cu. yd.0$15.00$0
Embankment (Fill)cu. yd.0$20.00$0
Pavement Rehabilitationsq. ft.988$4.00$3,950
New Pavementsq. ft.1,380$8.00$11,040
New Curblin. ft.25$15.00$375
New Sidewalksq. ft.0$5.00$0
Pavement markingslin. ft.210$0.50$105
Pavement markings (arrows)each4$250.00$1,000
Signage each2$500.00$1,000
Pavement Removalsq. ft.0$2.00$0
Subtotal A (Roadworks)$17,470
Storm Drainage System % of Subtotal A20%$3,494
Landscape Improvement% of Subtotal A5%$874
Street Lightingeach0$7,000.00$0
Signal and Detectioneach1$5,000.00$5,000
Subtotal B (Other)$9,368
$26,838
Mobilization % of Subtotal 110%$2,684
Erosion Control % of Subtotal 15%$1,342
Traffic Control % of Subtotal 15%$1,342
$5,368
$32,205
Plus Contingencies % of Total 40%$12,882
Estimated Construction Cost $45,087
Architectural/Engineering% of Est. Cost20%$9,017
Construction Management % of Est. Cost 10%$4,509
$13,526
Estimated Project Cost $58,613
*Note: This cost estimate does not include any property acquisition costs.
Tree Impact Fee each 9 $537.00 $4,833
Displaced Tree Contribution $4,833
OR 99W/DARTMOUTH
ESTIMATED PROJECT COST FOR NORTHBOUND RIGHT TURN LANE
Proposed Road Improvements
Subtotal 1 (Subtotals A + B)
Estimated Professional Fees
Subtotal 2 (Mobilization & Traffic Control)
Total (Subtotals 1 + 2)
11367 - Tigard Costco Fuel 4/1/2014 Page 2
FILENAME: H:\PROJFILE\11367 - TIGARD COSTCO GASOLINE ADDITION\CONTRIBUTIONS\MEMO\TIGARD FUEL
STATION_OR99W&DARTMOUTH CONTRIBUTIONS_UPDATED.DOCX
MEMORANDUM
Date: April 1st, 2014 Project #: 11367
To: Kim McMillan; Mike McCarthy; Agnes Kowacz; Tom McGuire; City of Tigard
cc: David Rogers, Costco Wholesale
Chris Ferko; Angelo Bolonga, Barghausen Consulting Engineers
From: Sonia Daleiden, PE, PTOE; Kelly Laustsen; Kittelson &Associates, Inc.
Project: Tigard Costco Gasoline Addition
Subject: Proposed Contribution towards Dartmouth/OR 99W Intersection
Following-up on our meeting with the City of Tigard on March 3rd, 2014 and subsequent meeting on
March 24th, 2014, this memorandum presents a proposal for mitigating the proposed Costco Gasoline
fuel station project impacts at the Dartmouth/OR 99W intersection. It presents a specific project to
mitigate the fuel station’s impact at the intersection, which includes construction of northbound and
southbound right-turn lanes at the intersection. It is our understanding that the City is pursuing
conversations with ODOT and the adjacent property owner to determine the feasibility of acquiring
necessary ROW and approval for the turn-lanes. In the event that Costco is unable to construct the
proposed turn-lanes, Costco will contribute the projected cost of the improvements ($237,833) for use
in design and construction of future improvements at Dartmouth/99W. If applicable, Costco will also
contribute $78,400 to account for ROW costs associated with the turn-lane improvements if the City
deems appropriate.
BACKGROUND
Costco is proposing to add an 18 fueling position Costco Gasoline fuel station to the existing Costco site
in Tigard, Oregon. The fuel station is projected to add a total of 90 net new weekday PM peak hour trip
ends and approximately 110 net new weekend peak hour trip ends. The current City of Tigard staff
report includes a condition of approval requiring Costco to contribute $525,000 towards the
intersection of SW Dartmouth Street and Highway 99W. There is not an ordinance for contributions to
a specific long-term project with associated defined cost and capacity improvements for the
intersection (only a generic project with a hypothetical cost outlined in the City’s TSP). Furthermore,
the intersection is forecast to meet adopted ODOT operational standards, even with the Costco project
in place, once currently funded and designed near-term improvements that are under construction are
in place. Even though the overall intersection will meet the adopted prevailing ODOT operational
standards with traffic from the Costco project, Costco has in good faith worked with the City of Tigard
Tigard Costco Gasoline Addition Project #: 11367
April 1, 2014 Page 2
Kittelson & Associates, Inc. Portland, Oregon
to provide contributions to a long-term future project at the Dartmouth/99W intersection in order to
mitigate the project’s specific impacts to individual movements at that intersection which operate
overcapacity.
Current funded improvements at the intersection include an additional westbound through lane on OR
99W, extension of queue storage for the northbound left-turn lanes on SW Dartmouth Street, and
conversion of the left-turns from Dartmouth Street to protected phasing (the north and south legs are
currently split phasing). These improvements are currently under construction.
IMPROVEMENTS REQUIRED TO MITIGATE PROJECT IMPACTS TO INDIVIDUAL
MOVEMENTS
As noted above, with the currently funded improvements in place the intersection of Dartmouth
Street/99W will meet ODOT operational standards even with traffic from the Costco project. As such,
this investigation focused on mitigating individual movements at the intersection where the Costco
project is adding additional traffic to movements that are forecast to operate over capacity.
Operational analysis shows that adding an exclusive southbound right-turn lane plus an exclusive
northbound right-turn lane at the Dartmouth/99W intersection would mitigate the project’s impacts
for the intersection movements that are operating overcapacity and improve operations (2014 total
traffic conditions) to equivalent or better than those without the project (2014 background conditions).
The operational impact of these improvements is shown in Table 1 and Table 2 for the weekday PM
peak hour and weekend midday peak hour, respectively. The operations under the 2014 background
conditions (without proposed fuel station) are compared to the 2014 mitigated total traffic conditions
(with proposed fuel station and turn-lane improvements). The difference in volume-to-capacity ratio
and delay between the scenarios is also provided. A negative value for the change indicates an
improvement in operations from the background to mitigated total traffic conditions.
Table 1 2014 Weekday PM Peak Hour Operations at Dartmouth/OR 99W
2014 Background Conditions1
Overall NBL NBT/NBR SBL SBT/SBR
V/C2 0.76 1.19 1.24 1.14 1.18
Delay (s) 58.4 165.1 198.7 186.6 199.8
2014 Total Traffic Conditions – Mitigated (NBR and SBR) 1
Overall NBL NBT NBR SBL SBT SBR
V/C2 0.76 1.17 0.92 0.08 1.01 1.12 0.03
Delay (s) 53.6 155.5 96.2 54.5 140.6 187.9 62.8
Change (Total Traffic Conditions minus Background Conditions)
Overall NBL NBT NBR SBL SBT SBR
V/C2 0 -0.02 -0.32 -1.16 -0.13 -0.06 -1.15
Delay (s) -4.8 -9.6 -102.5 -144.2 -46 -11.9 -137
1 Both scenarios include conversion to protected phasing on Dartmouth and do not alter the timing for OR 99W
2 v/c = volume-to-capacity ratio
Tigard Costco Gasoline Addition Project #: 11367
April 1, 2014 Page 3
Kittelson & Associates, Inc. Portland, Oregon
Table 2 2014 Weekend Midday Peak Hour Operations at Dartmouth/OR 99W
2014 Background Conditions
Overall NBL NBT/NBR SBL SBT/SBR
V/C2 0.83 1.13 0.84 0.68 1.13
Delay (s) 51.1 133.5 71.5 63.1 163.6
2014 Total Traffic Conditions – Mitigated (NBR and SBR) 1
Overall NBL NBT NBR SBL SBT SBR
V/C2 0.84 1.08 0.63 0.11 0.47 1 0.05
Delay (s) 48.0 110.8 60.5 52.8 49.6 130.9 55.2
Change (Total Traffic Conditions minus Background Conditions) 1
Overall NBL NBT NBR SBL SBT SBR
V/C2 0.01 -0.05 -0.21 -0.73 -0.21 -0.13 -1.08
Delay (s) -3.1 -22.7 -11 -18.7 -13.5 -32.7 -108.4
1 Both scenarios include conversion to protected phasing on Dartmouth and do not alter the timing for OR 99W
2 v/c = volume-to-capacity ratio
As seen in the tables, the combination of an exclusive southbound right-turn lane plus an exclusive
northbound right-turn lane would effectively mitigate the impact of the Costco fuel station. Analysis
sheets for all scenarios are provided in Appendix A.
A concept sketch showing the proposed improvements is provided in Figure 1. The improvements were
designed to tie-in with the improvements currently underway at the intersection, shown in the plans in
Appendix B. Based on discussions with ODOT, the plans are currently being updated to reflect protected
left-turn phasing on the Dartmouth approaches. Note that the sketch in Figure 1 is provided for
informational purposes to illustrate the improvements and is not intended to serve as a construction
document. Further refined plans will be required to construct the turn-lanes.
COST ESTIMATE
The City is currently engaged in discussions with ODOT and the property owner on the northwest side
of the intersection to assess the feasibility of acquiring the necessary ROW and permissions to
construct the right-turn lanes. While ROW exists to construct the northbound tight-turn lane, the
southbound right-turn lane requires the acquisition of ROW from the property owner on the northwest
side of the intersection.
In the event that construction proves infeasible, Costco proposes to contribute the cost of the right-
turn lanes, considered a fair and equitable contribution to mitigate Costco’s impact. Therefore, a cost
estimate summary for the turn-lane improvements was developed and is provided in Table 3. The cost
estimate also includes a tree impact fee ($537 per tree as provided by City of Tigard Staff). The cost
estimate also accounts for signal modifications to allow for right-turn overlaps in both directions. In the
event that ROW is not donated but must be purchased to construct the southbound turn-lane, a ROW
cost is also provided. Full details of the cost estimate are provided in Appendix C.
Tigard Costco Gasoline Addition Project #: 11367
April 1, 2014 Page 4
Kittelson & Associates, Inc. Portland, Oregon
Table 3 Cost Estimate for Dartmouth/OR 99W Improvements
Item Cost
Southbound right-turn lane $174,250
Northbound right-turn lane $58,750
Displaced tree contribution $4,833
Total $237,833
ROW Cost (associated with southbound right-turn lane)1 $78,400
1 Assumes a ROW cost of $40/foot
As seen in the table, the total cost of the improvements needed to mitigate the project’s impact at
Dartmouth/99W is $237,833. An additional $78,400 may be required to purchase ROW on the
northwest side of the intersection. This is significantly less than the $525,000 requested by the City,
which is based only on a generic and undefined project cost estimate of $6 million listed in the City's
TSP and an unsupported estimated benefit from that project of additional capacity for 1,400 trips per
hour. Costco requests that this revised amount, which is fair, equitable, and based on a specific
mitigation with a defined cost, be used as the value of Costco’s contribution to future improvements at
the Dartmouth/99W intersection (if the turn-lanes prove infeasible to construct). The City may use
these funds to construct improvements at Dartmouth/99W or towards another project in the
immediate area they see more fit. This contribution will be TDT creditable.
Please let us know if you have any questions or if there is any additional information you require. If not,
we trust that the staff report for the upcoming Planning Commission meeting will be updated to
include that Costco will construct northbound and southbound right-turn lanes at Dartmouth/99W. In
the event that construction of the turn-lanes become infeasible (due to the City’s conversations with
ODOT and the adjacent property owner), Costco will instead contribute the $237,833 equivalent cost of
the improvements (and potential $78,400 to account for ROW if the City deems appropriate).
Figure 1: Dartmouth/OR99 W Improvements
Northbound right-turn lane & Southbound right-turn lane
Existing sidewalk
OR 99W
S
W
D
a
r
t
m
o
u
t
h
S
t
OR 99W
OR 99W
New pavement
New sidewalk
Additional ROW
New pavement
Relocated pedestrian
pedestal
Rehabilitated
pavement
Appendix A Analysis Sheets
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/5/2014
11367 - Tigard Costco Gasoline Addition 3/3/2014 Year 2014 Background Conditions - Weekday PM Peak Hour - PROTSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)831241444881727115422089314111537
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.000.951.001.000.910.971.001.001.00
Frpb, ped/bikes1.001.000.981.001.001.000.991.001.00
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.000.951.000.96
Flt Protected0.951.001.000.951.000.951.000.951.00
Satd. Flow (prot)180535051576180550803502179618051795
Flt Permitted0.951.001.000.951.000.951.000.951.00
Satd. Flow (perm)180535051576180550803502179618051795
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)861293462921799115652179714712039
RTOR Reduction (vph)001860000110080
Lane Group Flow (vph)861293276921810056530301471510
Confl. Peds. (#/hr)211288
Confl. Bikes (#/hr)32
Heavy Vehicles (%)0%3%0%0%2%0%0%0%0%0%0%8%
Turn TypeProtPermProtProtProt
Protected Phases52163874
Permitted Phases2
Actuated Green, G (s)10.983.283.211.383.618.518.59.59.5
Effective Green, g (s)10.983.783.711.384.119.019.010.010.0
Actuated g/C Ratio0.080.600.600.080.600.140.140.070.07
Clearance Time (s)4.04.54.54.04.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.30.2
Lane Grp Cap (vph)14120959421463052475244129128
v/s Ratio Prot0.05c0.37c0.050.360.16c0.170.08c0.08
v/s Ratio Perm0.18
v/c Ratio0.610.620.290.630.591.191.241.141.18
Uniform Delay, d162.517.913.762.317.360.560.565.065.0
Progression Factor0.880.882.351.310.691.001.001.001.00
Incremental Delay, d24.41.00.65.60.7104.6138.2121.6134.8
Delay (s)59.416.832.987.012.6165.1198.7186.6199.8
Level of ServiceEBCFBFFFF
Approach Delay (s)22.816.2177.1193.5
Approach LOSCBFF
Intersection Summary
HCM Average Control Delay58.4HCM Level of ServiceE
HCM Volume to Capacity ratio0.76
Actuated Cycle Length (s) 140.0Sum of lost time (s)16.0
Intersection Capacity Utilization77.2%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/5/2014
11367 - Tigard Costco Gasoline Addition 3/4/2014 Year 2014 Total Traffic Conditions - Weekday PM Peak Hour - NBR & SBRSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)83121649112017021159021112514111737
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.54.04.04.5
Lane Util. Factor1.000.951.001.000.910.971.001.001.001.001.00
Frpb, ped/bikes1.001.000.981.001.001.001.000.971.001.001.00
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.001.000.851.001.000.85
Flt Protected0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (prot)18053505157618055080350219001565180519001495
Flt Permitted0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (perm)18053505157618055080350219001565180519001495
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)86126751112517731161522013014712239
RTOR Reduction (vph)00211000001140037
Lane Group Flow (vph)86126730012517840615220161471222
Confl. Peds. (#/hr)211288
Confl. Bikes (#/hr)32
Heavy Vehicles (%)0%3%0%0%2%0%0%0%0%0%0%8%
Turn TypeProtPermProtProtPermProtPerm
Protected Phases52163874
Permitted Phases2 84
Actuated Green, G (s)10.981.881.812.783.620.517.217.210.87.57.5
Effective Green, g (s)10.982.382.312.784.121.017.717.211.38.07.5
Actuated g/C Ratio0.080.590.590.090.600.150.130.120.080.060.05
Clearance Time (s)4.04.54.54.04.54.54.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.32.30.20.2
Lane Grp Cap (vph)1412060926164305252524019214610980
v/s Ratio Prot0.05c0.36c0.070.35c0.180.12c0.080.06
v/s Ratio Perm0.19 0.010.00
v/c Ratio0.610.620.320.760.581.170.920.081.011.120.03
Uniform Delay, d162.518.614.762.217.259.560.454.464.366.062.8
Progression Factor1.160.621.730.671.851.001.001.001.001.001.00
Incremental Delay, d24.31.00.714.20.696.035.80.176.3121.90.0
Delay (s)76.812.726.155.832.4155.596.254.5140.6187.962.8
Level of ServiceEBCECFFDFFE
Approach Delay (s)19.333.9128.4149.5
Approach LOSBCFF
Intersection Summary
HCM Average Control Delay53.6HCM Level of ServiceD
HCM Volume to Capacity ratio0.76
Actuated Cycle Length (s) 140.0Sum of lost time (s)16.0
Intersection Capacity Utilization76.6%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/4/2014
11367 - Tigard Costco Gasoline Addition 3/4/2014 Year 2014 Background Conditions - Weekend Midday Peak Hour - protected leftsSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)57113375313413743063812412513515169
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.04.0
Lane Util. Factor1.000.951.001.000.910.971.001.001.00
Frpb, ped/bikes1.001.000.971.001.001.000.981.001.00
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.000.921.000.95
Flt Protected0.951.001.000.951.000.951.000.951.00
Satd. Flow (prot)180535051549178750663467171717701774
Flt Permitted0.951.001.000.951.000.951.000.951.00
Satd. Flow (perm)180535051549178750663467171717701774
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)59118078414014313166512913014115772
RTOR Reduction (vph)0029802002900120
Lane Group Flow (vph)5911804861401460066523001412170
Confl. Peds. (#/hr)1066101818
Confl. Bikes (#/hr)2 1
Heavy Vehicles (%)0%3%1%1%2%0%1%0%0%2%1%3%
Turn TypeProtPermProtProtProt
Protected Phases52163874
Permitted Phases2
Actuated Green, G (s)7.366.766.710.870.221.520.414.613.5
Effective Green, g (s)7.367.267.210.870.722.020.915.114.0
Actuated g/C Ratio0.060.520.520.080.540.170.160.120.11
Clearance Time (s)4.04.54.54.04.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.30.2
Lane Grp Cap (vph)10118128011482755587276206191
v/s Ratio Prot0.03c0.34c0.080.29c0.190.130.08c0.12
v/s Ratio Perm0.31
v/c Ratio0.580.650.610.950.531.130.840.681.13
Uniform Delay, d159.922.922.159.319.054.052.955.258.0
Progression Factor0.821.162.210.770.241.001.001.001.00
Incremental Delay, d24.51.32.452.60.679.518.67.9105.6
Delay (s)53.527.951.398.05.2133.571.563.1163.6
Level of ServiceDCDFAFEEF
Approach Delay (s)37.713.3116.1125.3
Approach LOSDBFF
Intersection Summary
HCM Average Control Delay51.1HCM Level of ServiceD
HCM Volume to Capacity ratio0.83
Actuated Cycle Length (s) 130.0Sum of lost time (s)16.0
Intersection Capacity Utilization82.4%ICU Level of ServiceE
Analysis Period (min)15
c Critical Lane Group
HCM Signalized Intersection Capacity Analysis
3: SW Pacific Hwy & SW Dartmouth St 3/4/2014
11367 - Tigard Costco Gasoline Addition 3/4/2014 Year 2014 Total Traffic Conditions - Weekend Midday Peak Hour - SBR&nbrSynchro 7 - Report
KML Page 1
MovementEBLEBTEBRWBLWBTWBRNBLNBTNBRSBLSBTSBR
Lane Configurations
Volume (vph)57110880616813493069112715813515369
Ideal Flow (vphpl)190019001900190019001900190019001900190019001900
Total Lost time (s)4.04.04.04.04.04.04.04.54.04.04.5
Lane Util. Factor1.000.951.001.000.910.971.001.001.001.001.00
Frpb, ped/bikes1.001.000.971.001.001.001.000.941.001.000.99
Flpb, ped/bikes1.001.001.001.001.001.001.001.001.001.001.00
Frt1.001.000.851.001.001.001.000.851.001.000.85
Flt Protected0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (prot)18053505154917875066346719001515177018811545
Flt Permitted0.951.001.000.951.000.951.001.000.951.001.00
Satd. Flow (perm)18053505154917875066346719001515177018811545
Peak-hour factor, PHF0.960.960.960.960.960.960.960.960.960.960.960.96
Adj. Flow (vph)59115484017514053172013216514115972
RTOR Reduction (vph)00306020001480066
Lane Group Flow (vph)59115453417514340720132171411596
Confl. Peds. (#/hr)1066101818
Confl. Bikes (#/hr)2 1
Heavy Vehicles (%)0%3%1%1%2%0%1%0%0%2%1%3%
Turn TypeProtPermProtProtPermProtPerm
Protected Phases52163874
Permitted Phases2 84
Actuated Green, G (s)7.366.766.710.870.224.513.713.721.310.510.5
Effective Green, g (s)7.367.267.210.870.725.014.213.721.811.010.5
Actuated g/C Ratio0.060.520.520.080.540.190.110.110.170.080.08
Clearance Time (s)4.04.54.54.04.54.54.54.54.54.54.5
Vehicle Extension (s)2.35.25.22.35.22.32.32.32.30.20.2
Lane Grp Cap (vph)10118128011482755667208160297159125
v/s Ratio Prot0.030.33c0.100.28c0.210.070.08c0.08
v/s Ratio Permc0.34 0.010.00
v/c Ratio0.580.640.671.180.521.080.630.110.471.000.05
Uniform Delay, d159.922.623.159.618.952.555.452.648.959.555.1
Progression Factor0.821.162.020.770.231.001.001.001.001.001.00
Incremental Delay, d24.41.23.0126.50.658.35.10.20.771.40.1
Delay (s)53.727.549.9172.65.0110.860.552.849.6130.955.2
Level of ServiceDCDFAFEDDFE
Approach Delay (s)37.423.294.885.4
Approach LOSDCFF
Intersection Summary
HCM Average Control Delay48.0HCM Level of ServiceD
HCM Volume to Capacity ratio0.84
Actuated Cycle Length (s) 130.0Sum of lost time (s)16.0
Intersection Capacity Utilization81.0%ICU Level of ServiceD
Analysis Period (min)15
c Critical Lane Group
Appendix B Plans for Dartmouth & OR 99W
Appendix C Cost Estimate Details
Item Unit Quantity Unit Cost Total
Excavation (Cut)cu. yd.0$15.00$0
Embankment (Fill)cu. yd.0$20.00$0
Pavement Rehabilitationsq. ft.0$4.00$0
New Pavementsq. ft.3,200$8.00$25,600
New Curblin. ft.300$15.00$4,500
New Sidewalksq. ft.1,800$5.00$9,000
Pavement markingslin. ft.250$0.50$125
Pavement markings (arrows)each6$250.00$1,500
Signage each3$500.00$1,500
Pavement Removalsq. ft.0$2.00$0
Subtotal A (Roadworks)$42,225
Storm Drainage System % of Subtotal A20%$8,445
Landscape Improvement% of Subtotal A5%$2,111
Street Lightingeach2$7,000.00$14,000
Signal and Detection, relocate PPeach1$13,000.00$13,000
Subtotal B (Other)$37,556
$79,781
Mobilization % of Subtotal 110%$7,978
Erosion Control % of Subtotal 15%$3,989
Traffic Control % of Subtotal 15%$3,989
$15,956
$95,738
Plus Contingencies % of Total 40%$38,295
Estimated Construction Cost $134,033
Architectural/Engineering% of Est. Cost20%$26,807
Construction Management % of Est. Cost 10%$13,403
$40,210
Estimated Project Cost $174,242
Estimated Professional Fees
OR 99W/DARTMOUTH
ESTIMATED PROJECT COST FOR SOUTHBOUND RIGHT TURN LANE
Proposed Road Improvements
Subtotal 1 (Subtotals A + B)
Subtotal 2 (Mobilization & Traffic Control)
Total (Subtotals 1 + 2)
11367 - Tigard Costco Fuel 4/1/2014 Page 1
Item Unit Quantity Unit Cost Total
Excavation (Cut)cu. yd.0$15.00$0
Embankment (Fill)cu. yd.0$20.00$0
Pavement Rehabilitationsq. ft.988$4.00$3,950
New Pavementsq. ft.1,380$8.00$11,040
New Curblin. ft.25$15.00$375
New Sidewalksq. ft.0$5.00$0
Pavement markingslin. ft.210$0.50$105
Pavement markings (arrows)each4$250.00$1,000
Signage each2$500.00$1,000
Pavement Removalsq. ft.0$2.00$0
Subtotal A (Roadworks)$17,470
Storm Drainage System % of Subtotal A20%$3,494
Landscape Improvement% of Subtotal A5%$874
Street Lightingeach0$7,000.00$0
Signal and Detectioneach1$5,000.00$5,000
Subtotal B (Other)$9,368
$26,838
Mobilization % of Subtotal 110%$2,684
Erosion Control % of Subtotal 15%$1,342
Traffic Control % of Subtotal 15%$1,342
$5,368
$32,205
Plus Contingencies % of Total 40%$12,882
Estimated Construction Cost $45,087
Architectural/Engineering% of Est. Cost20%$9,017
Construction Management % of Est. Cost 10%$4,509
$13,526
Estimated Project Cost $58,613
*Note: This cost estimate does not include any property acquisition costs.
Tree Impact Fee each 9 $537.00 $4,833
Displaced Tree Contribution $4,833
OR 99W/DARTMOUTH
ESTIMATED PROJECT COST FOR NORTHBOUND RIGHT TURN LANE
Proposed Road Improvements
Subtotal 1 (Subtotals A + B)
Estimated Professional Fees
Subtotal 2 (Mobilization & Traffic Control)
Total (Subtotals 1 + 2)
11367 - Tigard Costco Fuel 4/1/2014 Page 2
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