Washington State Route 300

State Route 300 marker
State Route 300
Map of Mason County in western Washington with SR 300 highlighted in red
Route information
Auxiliary route of SR 3
Maintained by WSDOT
Length3.35 mi[1] (5.39 km)
Existed1964[2]–present
Major junctions
West end Belfair State Park
East end SR 3 in Belfair
Location
CountryUnited States
StateWashington
CountiesMason
Highway system
SR 292 SR 302

State Route 300 (SR 300) is a short state highway in Mason County, in the U.S. state of Washington. It extends 3.35 miles (5.39 km) from Belfair State Park to SR 3 in the community of Belfair. The route serves as a connector from Belfair State Park to Belfair and SR 3. The highway was Secondary State Highway 21C (SSH 21C) from 1957 until 1964.

  1. ^ Washington State Department of Transportation. "State Highway Log, 2006" (PDF). Retrieved November 10, 2008.
  2. ^ Washington State Legislature. "RCW 47.17.540: State Route 300". Retrieved November 10, 2008.