Washington State Route 108
| Old Olympic Highway | ||||
SR 108 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of US 101 | ||||
| Maintained by WSDOT | ||||
| Length | 11.96 mi (19.25 km) | |||
| Existed | 1964–present | |||
| Major junctions | ||||
| West end | SR 8 in McCleary | |||
| East end | US 101 in Kamilche | |||
| Location | ||||
| Country | United States | |||
| State | Washington | |||
| Counties | Grays Harbor, Mason | |||
| Highway system | ||||
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State Route 108 (SR 108, also known as the Old Olympic Highway) is a state highway in Grays Harbor and Mason counties, of the U.S. state of Washington. It extends 20.67 miles (33.27 km) from SR 8 in the city of McCleary, east to an interchange with U.S. Route 101 (US 101) in Kamilche. The route serves as a bypass and connects McCleary with Shelton, and Port Angeles.
The highway was Secondary State Highway 9D (SSH 9D) from 1937 until 1964, which ran from McCleary to Kamilche.