HomeMy WebLinkAbout38_RS_Trip Generation Memo_MultiCare_260422
520 Kirkland Way, Suite 100, Kirkland, WA 98033
(425) 889-6747 www.tenw.com
MEMORANDUM
DATE:April 8, 2026
TO:City of Renton
FROM:Spenser Haynie
TENW
SUBJECT:Trip Generation Memo
MultiCare Renton (Renton, WA)
TENW Project No. 2026-078
This memorandum summarizes the traffic information for the MultiCare Renton project. Upon review of
this information, we would like to confirm that no additional traffic analysis is required for this project.
Project Description
The MultiCare Renton site is located at 3116 NE Sunset Blvd as shown in the Attachment A vicinity map.
The proposed project includes an 18,000 square foot free-standing emergency room on a site that was
formerly occupied by a Rite Aid retail store. Primary vehicular access will be provided via an existing
driveway on NE 12th St and a shared access driveway on NE Sunset Blvd. A preliminary site plan is shown
in Attachment B.
Trip Generation
The trip generation estimates for the proposed and existing uses for the MultiCare Renton project were
based on methodology documented in the Institute of Transportation Engineers (ITE) Trip Generation
Manual, 12th Edition for Land Use Code (LUC) 650 (Free-Standing Emergency Room) and LUC 881
(Pharmacy/Drugstore with Drive-Through Window).
Adjustments to the trip generation estimates were made to account for pass-by trips, which are trips that
are made by vehicles that are already on the adjacent streets and make intermediate stops at a
commercial use on route to a primary destination (i.e. on the way from work to home). The pass-by
reductions are based on studies documented in the appendices of the ITE Trip Generation Manual, 12th
Edition for LUC 881 (Pharmacy/Drugstore with Drive-Through Window).
Table 1 summarizes the net new weekday trip generation with detailed trip generation calculations
provided in Attachment C.
Table 1
Trip Generation Summary
Net New Trips Generated
Weekday Time Period In Out Total
Daily -233 -234 -467
AM Peak Hour -7 -6 -13
PM Peak Hour -32 -29 -61
Trip Generation Memorandum
MultiCare Renton (Renton)
April 8, 2026
Page 2
Next Steps
If you have any questions regarding the information presented in this memo or require any additional
traffic analysis, please contact me at (206) 390-7253 or spenser@tenw.com with any questions.
cc: Blake Lord, KPFF
Attachments: A – Project Site Vicinity
B – Preliminary Site Plan
C – Trip Generation Calculations
ATTACHMENT A
Project Site Vicinity
ATTACHMENT B
Preliminary Site Plan
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LEGEND
RIGHT-OF-WAY
PROPERTY LINE
CEMENT CONCRETE CURB & GUTTER
CEMENT CONCRETE CURB
PAVEMENT MARKING
BUILDING PER ARCHITECTURAL
CEMENT CONCRETE
CONCRETE PAVERS PER LANDSCAPE ARCHITECT
ASPHALT PAVEMENT
LANDSCAPING
WHEEL STOP
ADA PARKING SYMBOL
STREET LIGHT
TRAFFIC DIRECTION ARROW
PARKING ANALYSIS:
STANDARD:59 STALLS
ADA ACCESSIBLE:7 STALLS
TOTAL:66 STALLS
TYPICAL STANDARD STALL SIZE: 20' X 9'
TYPICAL ADA ACCESSIBLE STALL SIZE: 20' X 9'
REQUIRED NUMBER OF ADA STALLS (10% OF TOTAL): 7 TOTAL (5 STANDARD, 2 VAN ACCESSIBLE)
PROVIDED NUMBER OF STALLS: 7 TOTAL (5 STANDARD, 2 VAN ACCESSIBLE)
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SECTION 4, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M.
KING COUNTY , WASHINGTON
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BUILDING NOTES:
·AREAS PROVIDED TO SUPPORT PLANNING ONLY. SEE ARCHITECTURAL
FOR EXACT FLOOR AREAS AND CALCULATIONS
·OCED: 18,000 SF MAXIMUM GFA (INCLUDES MECHANICAL EQUIPMENT
SPACE
·SHELL SPACE: 4,000 SF MAXIMUM GFA (POTENTIAL PRIMARY CARE
CLINIC)
AREAS ANALYSIS:
NEW & REPLACED PAVEMENT:13,101 SF
NEW & REPLACED CONCRETE:5,369 SF
TOTAL IMPERVIOUS:18,020 SF
TOTAL REPLACED EXTRUDED CURB:646 LF
TOTAL REPLACED PEDEST. CURB:127 LF
30'
HALF OF ROW
REMOVE AND REPLACE EXISTING
APPROX 470 SF CONC ADA WALKWAY
4'
TYP
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APPROX 674 SF CONCRETE DUMPSTER PAD
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PROPOSEED NEW PARKING ISLAND
TWO PROPOSED PARKING STALLS
PROPOSED LANDSCAPING AREA.
REMOVE TWO EXISTING PARKING STALLS
PROPOSED ADA PARKING (2 VAN
ACCESSIBLE, 5 STANDARD) 7 TOTAL
6'
9'
STAFF ENTRANCE
10' SIDEWALK
PROPOSED PARKING ISLAND
BUILDING OVERHANG
PER ARCHITECTURAL
STRUCTURAL COLUMN
PER ARCHITECTURAL (TYP)
PATIENT DROP OFFAMBULANCE DROP OFF
24'
24'
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.
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MAI PLACE ASIAN BISTRO
EXISTING BUILDING TO BE IMPROVED
(INTERIOR & EXTERIOR). SEE ARCHITECTURAL
DR
A
F
T
DRAFT
CHECK SET
ATTACHMENT C
Trip Generation Calculations
ITE
Land Use Size/Units 1 LUC 2 In Out In Out Total
DAILY
Proposed Use:
Free-Standing Emergency Room 18,000 GFA 650 24.94 50%50%225 224 449
Existing Use:
Pharmacy/Drugstore with Drive-Through Window 16,755 GFA 881 107.20 50%50%-898 -898 -1796
Pass-by Trips3 49%440 440 880
Subtotal (less pass-by)-458 -458 -916
Net New Daily Trips =-233 -234 -467
AM PEAK HOUR
Proposed Use:
Free-Standing Emergency Room 18,000 GFA 650 1.12 50%50%10 10 20
Existing Use:
Pharmacy/Drugstore with Drive-Through Window 16,755 GFA 881 3.83 52%48%-33 -31 -64
Pass-by Trips3 49%16 15 31
Subtotal (less pass-by)-17 -16 -33
Net New AM Peak Hour Trips =-7 -6 -13
PM PEAK HOUR
Proposed Use:
Free-Standing Emergency Room 18,000 GFA 650 1.52 46%54%12 15 27
Existing Use:
Pharmacy/Drugstore with Drive-Through Window 16,755 GFA 881 10.24 50%50%-86 -86 -172
Pass-by Trips3 49%42 42 84
Subtotal (less pass-by)-44 -44 -88
Net New PM Peak Hour Trips =-32 -29 -61
Notes:
1 GFA = Gross Floor Area.
2 Based on Institute of Transportation Engineers (ITE) Trip Generation Manual, 12th Edition, 2025.
3 Pass-by trips determined based on studies documented in the appendices of the Institute of Transportation Engineers, Trip Generation Manual, 12th Edition.
MultiCare Renton (Renton)
Weekday Trip Generation Summary
Directional Distribution Trips GeneratedTrip Rate or
Equation 2