Projects — TIB Funding Cycles
FY 2026 UAP Selections
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| Region: Puget Sound | Legislative District: 32 | Length: 0.70 mi. | FY 2026 Urban Arterial Program (UAP) |
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Existing ConditionsThe 145th Street Corridor (SR523) runs 3 miles east/west and is the border between the cities of Shoreline and Seattle; it connects with SR99 (west) and SR522 (east) and midway includes an interchange with I-5. The average daily traffic on this corridor is up to 30,000+ ADT with a high-volume history of accidents. A large part of this corridor is transitioning from single family residential to multifamily. Currently, bottlenecks occur with in-lane left-turns; utility poles make sidewalks impassable for a wheelchair or stroller; it is an unfriendly corridor for bicyclists; and due to congestion was largely avoided by transit. Sound Transit is opening light rail immediately northeast of the I-5 Interchange in August 2024 and King County Metro will begin new frequent service in September 2024 to access the new light rail station (BRT east of I-5 starts in 2027). With this new regional transit coming to Shoreline, the City began a planning study/public outreach (2015) to analyze improvements needed on the corridor to increase safety and accessibility. The study led to two Shoreline capital improvement projects: I-5/145th Street Interchange Project (constructing roundabouts and re-channelizing bridge deck); and the 145th Street Corridor Project, I-5 to Aurora Ave (Interurban Trail). The latter has been divided into phases to complete. This application seeks ROW and Construction funding for Phase 2 and 3 (Corliss Ave to Interurban Trail) which will complete this corridor project. |
Project Funding
| TIB Funds | Local Funds | Total Costs | |
|---|---|---|---|
| Design | 0 | 0 | 0 |
| Right of Way | 2,120,000 | 7,993,500 | 10,113,500 |
| Construction | 4,380,000 | 13,186,540 | 17,566,540 |
| Project Totals | $6,500,000 | $21,180,040 | $27,680,040 |
Local Match
| TIB Participation | Local Match | Minimum Local Match |
|---|---|---|
| 23.5% | 76.5% | 20% |
Summary of Improvements
- Improves safety;
- Completes gap;
- Relieves congestion;
- Removes ADA barriers;
- Builds multimodal facilities
Description of Improvements
This project will improve safety and operations to reduce traffic delay; increasing transit speed/reliability; creating better access for people moving along the corridor and accessing new light rail. Design includes signalized intersection improvements and signal timing adjustments. Included will be new dedicated left turn lanes with phasing at Meridian Ave; longer left turn queue EB approaching Aurora Ave; and curbing to prevent left turns from NB Midvale and Lenora Ave which currently turn into the Aurora WB turn queue (accident reduction measures). Project removes obstacles to pedestrians on both sides of street and includes improved sidewalks and crosswalks, pedestrian countdown signals, and ADA accessible curb ramps. North side improvements will provide a higher comfort/safety level with wider sidewalk and amenity zone. Project improves pedestrian lighting; advances bus stop access/user experience; and re-directs bicyclists to off-corridor facilities. Conflict points will be reduced to help reduce accidents. Improvements will help reduce congestion and benefit access, mobility, and safety for all modes of transportation. Project supports two growing candidate Countywide Centers (Shoreline has rezoned up to MUR-70) helping provide access to the many employment, educational, commercial, and recreational opportunities that connecting with a regional transit system provides and helping to maximize the return on the Sound Transit multi-billion dollar investment.