City of SeaTac
Airport Station Pedestrian Improvements
S 176th St/32nd Ave S and S 180th St
TIB Award Amount
$4,000,000
Region: Puget Sound   |   Legislative District: 33   |   Length: 1.20 mi. FY 2025 Urban Arterial Program (UAP)

Existing Conditions

The project improves safety and mobility for people walking and biking within SeaTac City Center (a designated PSRC Regional Center), including connections to Sound Transit light rail station, RapidRide A Line, bus stops, and SeaTac Airport. The project supports creating a walkable and bikeable neighborhood for residents, employees, visitors, and improves access to the Airport. Safety is an important focus, particularly for non-motorized users. Review of 5 years of collision data found 11 vehicle pedestrian/bicycle collisions. Pedestrian activity is very high, with 185 hourly pedestrian crossings at the S 176th St/International Blvd intersection. There are no bicycle facilities on the 4 street segments. 2 segments lack sidewalks. 2 have substandard sidewalks that place pedestrians next to moving vehicles. On the north segment of 32nd Ave S, pedestrians must walk on the roadway. On S 180th St, only a painted stripe is used to delineate a pedestrian walkway.

Project Funding

  TIB Funds Local Funds Total Costs
Design 0 0 0
Right of Way 150,000 2,177,643 2,327,643
Construction 3,850,000 21,521,815 25,371,815
Project Totals $4,000,000 $23,699,458 $27,699,458

Local Match

TIB Participation Local Match Minimum Local Match
14.4% 85.6% 20%

Summary of Improvements

  • Improves pedestrian safety;
  • Extends improvements;
  • Removes ADA barriers

Description of Improvements

The project constructs safety and mobility improvements for people walking, biking, and using transit around SeaTac/Airport light rail station. The project improves 4 street segments and 2 intersections. S 176th St (International Blvd - 32nd Ave S): improve north side of street to add two-way cycle track, planter strip buffer, and buffered 8ft sidewalk to access the non-motorized bridge to rail station and Airport and RapidRide bus stops at the north leg of International Blvd intersection. 32nd Ave S (S 170th St S 176th St): Add buffered 6ft sidewalks, landscaped planters, parking stalls, sharrow markings to create a bicycle blvd with traffic calming; including narrowed vehicle lanes, raised intersections, and speed humps. 32nd Ave S (S 176th St S 180th St): Improve east side of street to add northbound bike lane, parking stalls, planter strip, and 8ft sidewalk. Add southbound bike lane from S 176th St to S 177th St, and southbound bike sharrow to S 180th St. S 180th St (east of 32nd Ave S): Add eastbound bike lane, planter strip buffer, and 8ft sidewalk on north side of the street. Add westbound bike sharrow to vehicle lane. S 176th St/International Blvd intersection: bring all curb ramps to ADA compliance. Revise signal phasing to reduce vehicle pedestrian conflicts. S 176th St/32nd Ave S intersection: Remove eastbound right turn lane to shorten west leg crossing distance. Add bike boxes, and signal safety improvements. Each segment includes new vehicle and pedestrian lighting.