High friction surface treatment
Select roads to receive anti-skid treatment in 2021 to increase traction
King County Roads Services will apply a High Friction Surface Treatment (HFST) to 16 sections of King County Roads between June and October 2021. The anti-skid treatment improves safety by increasing traction and reducing the run-off-the-road crashes. The product provides more rolling resistance and is most successful on sharp curves where drivers slide off the road and hit fences, other barriers, and end up in the grass or a ditch.
King County applied this innovative product in 2015 and 2018 with success. King County has analyzed and reviewed areas where it could continue to make a difference.
The map below shows the locations where we will apply the treatment in 2021.
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Broch Bender, Communications Manager
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Roads like these are good candidates for High Friction Surface Treatment. If a driver takes this corner too fast, s/he may slide and hit the trees or bounce off the guardrail. In this case, the anti-skid treatment creates greater traction leading up to and inside the curve, and the guardrail installation reduces the chance of hitting the trees which could cause greater physical harm.
HFST locations in 2021 |
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| # | Road | Actual location | |
| NORTHEAST | |||
| 1 | Batten Road NE | NE 140th Street at 290th Avenue NE
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| 2 | NE Fay Road | State Route 203 at 302nd Way NE
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| 3 | NE Union Hill Road | 238th Avenue NE at 240th Way NE
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| SOUTHEAST | |||
| 4 | SE Jones Road | House #17601 & House #17711 | |
| 5 | 169th Avenue SE | Licorice Farm Trail to SE 112th Street | |
| 6 | SE 128th Street | 186th Place SE at 193rd Lane SE | |
| 7 | Witte Road SE | SE 225th Place at State Route 169 | |
| 8 | Sweeney Road SE | 212th Avenue SE at SE 222nd Street | |
| 9 | Witte Road SE | SE 230th Place at SE 228th Street | |
| 10 | 352nd Avenue SE | SE 254th Street at SE 252nd Street | |
| 11 | Black Diamond Ravensdale Road | Lake Grinder Road at 267th Avenue SE | |
| 12 | SE Covington Sawyer Road | 181st Avenue SE at 184th Place SE | |
| 13 | 212th Way SE | SE 368th Street at SE 376th Street | |
| 14 | SE Green Valley Road | House #17225 & House #17601 (near Doreen Johnson Conservation Area) | |
| VASHON | |||
| 15 | SW 204th Street | 107th Avenue SW at 111th Avenue SW | |
| 16 | SW Bank Road | Commons Road SW at Thorsen Road SW | |
Contact us
Email: Maint.roads@kingcounty.gov
24/7 Road Helpline: 206-477-8100 or 1-800-527-6237
TTY Relay: 711
Twitter: @KCRoads