Guardrail Program
The Guardrail Program will begin in fall 2025
March 10, 2023 – Crews install new guardrail down SE 208th Street from 140th Avenue SE to 148th Avenue SE
Status update
October 2024
The locations for new guardrail have been identified and construction will begin in fall 2025.
For the most up to date information regarding lane restrictions and road closures, visit kingcounty.gov/mycommute.
Project overview
King County installs new guardrail throughout unincorporated King County. Guardrails and other barricades increase safety by preventing vehicles from running off the road.
We are also replacing guardrail over bridges in 2025. You can learn more about that program here.
2025 Guardrail work locations
Road | Type of work/Extent | Location | Work expected |
NE Redmond Rd | Two locations between NE Novelty Hill Rd to NE 116th St | NE of Redmond | Fall 2025 |
NE 50th St |
196th Ave NE to Sahalee Way NE | East of Lake Sammamish | Fall 2025 |
David Powell Rd |
Preston Fall City Rd SE to 347th Pl SE | South of Fall City | Fall 2025 |
169th Ave SE |
SE 112th St to SE Licorice Way | May Valley | Fall 2025 |
184th Ave SE | SE 207th St to SE Lake Youngs Rd | East of Kent | Fall 2025 |
156th Ave SE | SE 229th Pl to SE 227th St | East of Kent | Fall 2025 |
SE 224th St | 253rd Ave SE to 255th Ave SE | East of Maple Valley | Fall 2025 |
278th Way SE | SE 392nd St to SE 400th Pl | NE of Enumclaw | Fall 2025 |
292nd Ave SE | SE 392nd St to SE 408th SE |
NE of Enumclaw | Fall 2025 |
SE 472nd St | 290th Ave SE to 294th Ave SE |
SE of Enumclaw |
Fall 2025 |
Frequently asked questions
We look at the five-year crash history focused on run-off-road collisions. All traffic crash and collision data is reported and stored at the Washington State Transportation Data, GIS, and Modeling Office. This office is the source for the most complete and up-to-date information regarding any location in Washington State. It is the source we use for crash and collision information. For information on crashes on your roadway, submit your data request here.
Program photos
May 25, 2023 – Crews prep this sharp curve on SE Mirrormont Boulevard & 245th Avenue SE between Issaquah-Hobart Road SE to SE 146th Street for new concrete barricades.
May 25, 2023 – New concrete barricades help prevent vehicles from running off the road on this section of SE Mirrormont Boulevard and 245th Avenue SE.