Sunshine Bridge, Cantilever bridge in St. James Parish, Louisiana, US

Sunshine Bridge is a steel cantilever bridge carrying Louisiana Highway 70 across the Mississippi River in St. James Parish, Louisiana. Two tall vertical towers rise from rectangular bases in the water, and a lattice truss of crisscrossing steel beams forms the deck between and beyond them. The structure is 2,510 metres long and opened to traffic in August 1964.

The Sunshine Bridge was completed in 1963 and opened to traffic in August 1964, built under the administration of Governor Jimmie Davis, after whom it is named. When it opened it was the only bridge across the Mississippi between New Orleans and Baton Rouge, but its south end emptied into a swamp until funding connected it to LA 70. A 50-cent toll to the west bank was collected until August 15, 2001, when the Louisiana Legislature abolished it.

The bridge serves as a daily connection for people living and working on both sides, supporting the region's petrochemical industry and local commerce. It marks the boundary between two parishes and reflects how the river both divides and links communities together.

The bridge is free to cross and open throughout the day for all types of vehicles. Standard driving conditions apply, as the structure handles daily commuter and commercial traffic.

The bridge is named for Governor Jimmie Davis's signature song "You Are My Sunshine"; Davis even rode a horse named Sunshine into the governor's office at his second inauguration. When it opened in 1964 it was the only Mississippi crossing between New Orleans and Baton Rouge, and its south end emptied into a swamp until funding connected it to LA 70.