High Friction Surface Treatment - Completed July 2015

Overview
In summer of 2015, we installed high friction surface treatment (HFST) to increase traction on two freeway ramps with some of the highest percentages of wet weather-related collisions in Washington state. Crews laid down a special mixture of sand and rock mix on the 148th Avenue Southeast on-ramp to westbound Interstate 90 in Bellevue and in Everett on the eastbound State Route 526 on-ramp to southbound Interstate 5.

 

How you benefit

Improves safety
By installing HFST, WSDOT anticipates a dramatic drop in the number of wet weather-related crashes at each ramp.

Relieves congestion
Reducing collisions on these two ramps will reduce the traffic congestion that occurs when drivers can’t get around the scene.

 

Partnerships & cooperation
WSDOT worked closely with the cities of Everett and Bellevue to coordinate the construction closures and impacts.

 

Funding
The approximate cost of this project was $355,000. It was paid for by funds set aside by the Washington State Legislature for low cost enhancement projects.  

 

Contact us
Northwest Region Communications
15700 Dayton Ave. N.
Seattle, WA 98133
NWPublicAffairs@wsdot.wa.gov
206-440-4697 (ext. 8)

Eastgate small map
View larger map

High Friction Surface Treatment Video Thumbnail
Watch as contractor crews working for WSDOT apply high friction surface treatment to the ramp in Bellevue.