Mandeville in St. Tammany Parish, Louisiana — The American South (West South Central)

Lake Pontchartrain Causeway Bridge

National Historic Civil Engineering Landmark

Photographed by Cajun Scrambler, November 10, 2016

1. Lake Pontchartrain Causeway Bridge Marker

Inscription. The original 23.86 mile-long structure, which now carries the Southbound traffic, was designed by the firm of Palmer & Baker. When opened in 1956, the structure was the longest bridge in the world by more than 15 miles. In building the bridge, which took just fourteen months, assembly-line, mass-production methods were utilized for the first time in the construction of a bridge. It was designed to employ hundreds of identical, hollow concrete pilings, concrete caps, and pre-stressed deck sections manufactured at an on-shore facility and barged into place. Engineering News-Record acclaimed the project to be "a bold venture requiring unusual foresight, ingenuity and resourcefulness."

Opened: August 30, 1956 Dedicated: October 18, 2003

Erected 2013 by American Society of Civil Engineers.

Topics and series. This historical marker is listed in these topic lists: Bridges & Viaducts • Landmarks • Roads & Vehicles • Waterways & Vessels. In addition, it is included in the ASCE Civil Engineering Landmarks series list. A significant historical date for this entry is August 30, 1956.

Location. 30° 21.91′ N, 90° 5.642′ W. Marker is in Mandeville, Louisiana, in St. Tammany Parish. It is on North Causeway Boulevard, on the

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right when traveling south. Located and mounted on the Causeway Toll Plaza building. Touch for map. Marker is at or near this postal address: 100 North Causeway Boulevard, Mandeville LA 70448, United States of America. Touch for directions.

Regionally, this marker is in the Florida Parishes

and in Greater New Orleans.

It is also in the American South,

specifically in the Deep South,

and on the Gulf Coast.

Globally, it is in North America,

a Gulf of Mexico state,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once New Spain,

the territory of the Mississippian Culture,

the Louisiana Purchase,

one of the Confederate States of America,

and the Antebellum South.

Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies: Lake Pontchartrain Causeway (here, next to this marker); Greater Mandeville Veterans Memorial (approx. one mile away); Rest Awhile (approx. 1.6 miles away); Our Lady Of The Lake Church (approx. 1.6 miles away); Dew Drop Social and Benevolent Hall (approx. 2 miles away); Battle of Lake Pontchartrain (approx. 2.3 miles away); Pottery Hill (approx. 2.7 miles away); Native Peoples (approx. 3.7 miles away). Touch for a list and map of all markers in Mandeville.

Photographed by Cajun Scrambler, November 10, 2016

2. Lake Pontchartrain Causeway Bridge Marker

Credits. This page was last revised on December 9, 2022. It was originally submitted on November 20, 2016, by Cajun Scrambler of Assumption, Louisiana. This page has been viewed 1,090 times since then and 78 times this year. Photos: 1, 2. submitted on November 20, 2016.