The Norfolk Southern Railway's Seabrook Railroad Bridge is located north of New Orleans on Lake Pontchartrain, on the lake (north) side of the Seabrook Sector Gate Complex, and the terminus of a part of the Gulf Intracoastal Waterway called the Inner Harbor-Navigational Canal (IH-NC), locally referred to as the Industrial Canal, that connects Lake Pontchartrain to the Mississippi River.

The original Florida Avenue Bridge was removed in 2000 and replaced with the current modern, steel structure which was completed in May 2005.

In the event of a tropical storm or hurricane the St. Claude Avenue bridge, no longer used for rail, cannot be closed to vehicle or pedestrian traffic.

The Florida Avenue Bridge shall be raised to 41 feet and all traffic closed.

In the event the rail bridge is lowered water traffic must contact the authorities on radio frequency VHF 13 for information.