// Workers AI · dad joke modeWhy did the Interstate Highway Bridge go to therapy? It had a lot of spanning issues.

Not to be confused with the Interstate Bridge on the Columbia River between Oregon and Washington.

Interstate Highway Bridge
Looking at the northern side of the Interstate Highway Bridge from Clarkston, Washington
Coordinates	46°25′13″N 117°02′11″W
Carries	US 12 (4 lanes)
Locale	Clarkston, Washington and Lewiston, Idaho
Maintained by	Washington State Department of Transportation
Characteristics
Design	Vertical Lift Truss
Location
Interactive map of Interstate Highway Bridge

The Interstate Highway Bridge crosses the Snake River, between Clarkston, Washington and Lewiston, Idaho. The bridge carries U.S. Route 12 (US 12) across the state line between Washington and Idaho, and is maintained by the Washington State Department of Transportation. It was built in 1939 and is 1,424 feet (434 m) long. It is nicknamed the "Blue Bridge" locally.

The bridge was the primary route between Lewiston and Clarkston, until the Southway Bridge was constructed in the 1980s.

Gallery

• 
  A telephoto view of the Snake River dividing Lewiston, Idaho and Clarkston, Washington. The photographer is atop Lewiston Hill, looking south. The Interstate Highway Bridge is the closer of the two bridges. The Southway Bridge is in the distance.
• 
  Looking east toward Idaho, from underneath the bridge
• 
  Crossing westbound into Clarkston via bicycle
• 
  Westbound vehicles entering Washington state

See also

• Lower Granite Lake

External links

• Historic image from Asotin County Heritage Collection