Huey P. Long Bridge

The Huey P. Long Bridge spans the Mississippi River with a steel through-truss design, featuring two railroad tracks and three lanes of US 90 on each side.

Completed in December 1935, this structure marked the first Mississippi River bridge in Louisiana and remained the longest railroad bridge worldwide for fifteen years.

The American Society of Civil Engineers designated this engineering achievement as a National Historic Civil Engineering Landmark in recognition of its structural innovations.

A major expansion project in 2013 transformed the bridge by widening each side from two 9-foot lanes to three 11-foot lanes with additional shoulders for safer traffic flow.

The bridge foundations extend through compressible soil to rest on fine sand 160 feet below Mean Gulf Level, using their mass for stability in challenging ground conditions.

Location: Jefferson Parish

Inception: December 1935

Official opening: December 1935

GPS coordinates: 29.94420,-90.16890

Latest update: May 27, 2025 07:15