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Guardrail Program
The Guardrail Program was completed in 2026.
March 2026: Newly installed guardrail on SE Reining Road, near North Bend.
Status update
May 21, 2026
Installation of the new guardrail is now complete. Construction began on January 27, 2026, and wrapped up on February 27, 2026. Travelers will now see newly installed guardrail throughout unincorporated King County, an important safety upgrade that helps protect everyone who uses our roads.
For the most up to date information on lane restrictions and road closures, visit KingCounty.gov/MyCommute or check out Road Alerts to receive an email or text when Road Services work is happening in your community.
Project overview
King County completed installation of new guardrail throughout unincorporated King County. Guardrails and other barricades increase safety by preventing vehicles from running off the road.
We also replaced guardrail over bridges in 2025. You can learn more about that program here.
2026 Guardrail work locations map
New guardrail was installed in ten locations throughout unincorporated King County in 2026.
2026 Guardrail work locations
| Road | Type of work/Extent | Location | Work completed |
| NE Redmond Rd | Three locations between NE Novelty Hill Rd to NE 116th St | NE of Redmond | February 12-13, 2026 |
| NE 50th St |
196th Ave NE to Sahalee Way NE | East of Lake Sammamish | February 3, 2026 |
| David Powell Rd |
Preston Fall City Rd SE to 347th Pl SE | South of Fall City | January 29-30, 2026 |
| 169th Ave SE |
SE 112th St to SE Licorice Way | May Valley | February 19-20, 2026 |
| 184th Ave SE | SE 207th St to SE Lake Youngs Rd | East of Kent | February 21, 2026 |
| 156th Ave SE | SE 229th Pl to SE 227th St | East of Kent | February 24, 2026 |
| SE 224th St | 253rd Ave SE to 255th Ave SE | East of Maple Valley | February 18, 2026 |
| 278th Way SE | SE 392nd St to SE 400th Pl | NE of Enumclaw | February 25-27, 2026 |
| 292nd Ave SE | SE 392nd St to SE 408th SE |
NE of Enumclaw | February 23, 2026 |
| SE 472nd St | 290th Ave SE to 294th Ave SE |
SE of Enumclaw | February 25, 2026 |
Frequently asked questions
We also looked 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
March 4, 2026: Newly installed guardrail on SE 472nd Street, near Enumclaw, just south of the King County Fairgrounds.
February 26, 2026: Newly installed guardrail at 278th Ave SE, near Enumclaw.
February 19, 2026: Contractor crews installed guardrail on 169th Ave SE and SE 112th St, near Renton. A crew member is carrying a long wooden post that will be used to secure the metal guardrail.
February 16, 2026: Contractor crews installed guardrail on NE Redmond Road, near Redmond.
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.