 State Route 8 | ||||
|---|---|---|---|---|
 SR 8 highlighted in red | ||||
| Route information | ||||
| Maintained by WSDOT | ||||
| Length | 20.67 mi[1] (33.27 km) | |||
| Existed | 1964[2]–present | |||
| Major junctions | ||||
| West end |  US 12 in Elma | |||
 SR 108 in McCleary | ||||
| East end |  US 101 near Olympia | |||
| Location | ||||
| Country | United States | |||
| State | Washington | |||
| Counties | Grays Harbor, Thurston | |||
| Highway system | ||||
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State Route 8 (SR 8) is a state highway in Grays Harbor and Thurston counties, of the U.S. state of Washington. It extends 20.67 miles (33.27 km) from U.S. Route 12 (US 12) in the city of Elma, east to an interchange with US 101 about 5.90 miles (9.50 km) northwest of the state capital, Olympia. SR 8 intersects SR 108 west of McCleary. The route connects Elma and Olympia as part of a corridor between Aberdeen and the Puget Sound region.
The highway was part of the Elma – Grand Mound branch of Primary State Highway 9 (PSH 9 EG) from 1937 until 1964, which ran from Elma southeast to Interstate 5 (I-5), formerly US 99 in Grand Mound, which was later added as part of US 12 in 1967. The road also forms the northern boundary of Capitol State Forest in Thurston County.
- ^ Multimodal Planning Division (January 4, 2021). State Highway Log Planning Report 2020, SR 2 to SR 971 (PDF) (Report). Washington State Department of Transportation. pp. 249–253. Retrieved September 23, 2021.
- ^ "RCW 47.17.035: State Route 8". Washington State Legislature. Retrieved October 19, 2008.