State Route 117 (SR 117) is a short, 1.40-mile (2.25 km) long state highway located entirely within Port Angeles, the county seat of Clallam County, in the U.S. state of Washington. The short roadway, named the Tumwater Truck Route, serves the waterfront of Port Angeles and intersects two streets and crosses under another street on a short bridge. Beginning at an interchange with U.S. Route 101 (US 101), the highway travels northeast to terminate at Marine Drive. SR 117 was first established in 1991, but a road parallel to the current roadway had existed since 1966.
SR 117 begins as the Tumwater Truck Road at an interchange with U.S. Route 101 (US 101) in southwest Port Angeles. The interchange only serves traffic from US 101 eastbound driving onto SR 117 northbound and motorists driving from the route southbound onto US 101 westbound, however, left turns are allowed to serve the missing movements. Traveling north, the highway intersects Lauridsen Boulevard and crosses under 8th Street. Between 8th Street and the Port Angeles waterfront, a daily average of 7,400 motorists accessed the roadway in 2008. After the 8th Street bridge, the road intersects 3rd Street and terminates at Marine Drive, which continues east as 1st Street to US 101.
SR 117 originated in 1991, but a short local street connecting the waterfront with U.S. Route 101 (US 101) had existed in 1966. In 1991, the Washington State Legislature established SR 117 and the roadway has not been realigned since 1991. During a severe winter storm on 27 November 2006, the Port Angeles Police Department closed both ends of the highway due to treacherous conditions. On 15 December 2006, a wind strom caused trees near the roadway to block the highway and the route had to be shut down. On 7 August 2007, the city of Port Angeles announced that the 8th Street bridge over the Tumwater Truck Route would be closed on 20 August 2007. A detour was set for both 8th Street and the truck route; trucks were routed onto US 101 (Lincoln Street) and Marine Drive / Front Street. Starting on 1 April 2008, the new bridge's girders started to arrive at the construction site. The last girders arrived on 9 April and the highway was reopened. On 1 August, the roadway was closed for another month to be reconstructed.