The Columbia River Crossing (CRC) was a joint freeway megaproject from 2005 to 2013 between Oregon and Washington, which proposed to widen and modernize Interstate 5 where it crossed the Columbia River. Central to this was the replacement of the Interstate Bridge, a pair of through-truss bridges. The northbound bridge dates to 1917, and its nearly identical companion was opened in 1958 to carry southbound traffic. The bridges, the earlier of which pre-dates the U.S. Highway System by nine years, served as the crossing for U.S. Route 99 before the establishment of the Interstate Highway System and Interstate 5 as the new route number. Each of the current bridges currently has three traffic lanes and no emergency lanes. Each bridge also has a vertical-lift draw bridge span on the Washington State side of the river to allow shipping traffic access upriver.

The Interstate Bridge is a pair of nearly identical steel vertical-lift, Parker through-truss bridges that carry Interstate 5 traffic over the Columbia River between Vancouver, Washington and Portland, Oregon in the United States.