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TIB Project Information

City of Mercer Island's Island Crest Way Shared Use Path Phase 1

P-P-104(P04)-1

P-P-104(P04)-1
Island Crest Way Shared Use Path Phase 1
Island Park Elementary to SE 60th St

FY 2026 Active Transportation Program
Current Phase : Design
Total TIB Funding : $850,000

County: King   |   Legislative District: 41   |   Project Length: 1,480.00   |   TIB Engineer: Greg Armstrong   |   Last Payment Date:

Project Information

Lead Agency MERCER ISLAND
Funding Year 2026
Program ATP
Current Phase Design
Legislative District 41
Congressional District 9
Federal Route Number 1933
Project Length 1480.00 mi.
ADT 15,300
Functional Class Minor
Type of Work Pedestrian
Project Contact Rebecca OSullivan
Contact Email Rebecca.OSullivan@mercerisland.gov
TIB Engineer Greg Armstrong
Last Payment Date
Cultural Resource Assessment CRA

Project Schedule

  Target Date Actual Date
Project Selection Date   11/22/2024
Delayed Project Date 07/01/2027  
DAHP Assessment Date  
Predesign Approval
Design Approval 02/21/2025 02/24/2025
Bid Auth. Approval 04/01/2026
Construction Approval 06/01/2026
Project Closeout 12/31/2026
Audit Date  
Withdrawn Date  

Project Funding

TIB Funds Project Costs
Environmental Study 0 0
Design Study 0 0
Total Predesign 0 0
     
Special Study 0 0
Design 106,993 203,950
Right of Way 0 0
Total Design 106,993 203,950
     
Construction Engineering 118,880 226,610
Construction Contract 624,127 1,189,710
Other Construction 0 0
Total Construction 743,007 1,416,320
     
Total TIB Funding 850,000 1,620,270

Local Funding Partners

Funding Amount Percent
MERCER ISLAND 770,270 47.5%
WSDOT Funding 0 0.0%
 
 
 
 
 
 
 
 
Total Local Funding 770,270 47.5%

Project Description

The project constructs a 10-foot shared use path with a planter strip buffer along the west side of Island Crest Way between Island Park Elementary School (south driveway) and SE 60th St. The project includes installation of illumination, drainage improvements, and crosswalk markings. The project connects Island Park Elementary with the adjacent Island Crest Park and Deanes Childrens Park. Based on corridor pedestrian and bicycle counts, the west side path is expected to serve 60-70 pedestrians and bicyclists during the peak hour. The path will be designed as an all ages and abilities facility, friendly for children, families, the elderly, and less confident bicyclists. The project will also install ADA upgrades at intersections, improving accessibility for users with limited mobility, strollers, or mobility assistance devices.

Existing Condition

Island Crest Way is the primary north-south route on Mercer Island, serving roughly 15,000 vehicles, 300 pedestrians, and 50 bicyclists on weekdays. The only continuous parallel routes are West and East Mercer Way, which are less direct and do not have sidewalks or dedicated bicycle facilities. In the project area, Island Crest Way is 2 lanes with no paved shoulders. There is an informal dirt pathway on the west side of the road that is used by cyclists and by children to walk to Island Crest Park and Island Park Elementary School. The path lacks pedestrian-scale lighting and drainage, making the path impractical for use during wet conditions. There is a 6-foot paved walkway on the east side of the street, which lacks pedestrian-scale lighting. There is not a marked crosswalk along the west side of Island Crest Way at the Island Crest Park main entrance. Two crashes occurred in the project area (last 3 years) between vehicles and pedestrians or bicyclists, both involving children.

Project Benefits

  • Improves pedestrian safety;
  • Extends improvements;
  • Creates direct access to school complex/business district/etc.;
  • Removes ADA barriers

Project Pictures

Project Delays

Delay Type Resolution Date Comments

No delayed project history.

Project Payments