Lake Pontchartrain Causeway Bridge & Safety Bay Construction, Past & Present

August 20, 2020 1:00 pm

Carlton Dufrechou, ACIP, General Manager, Lake Pontchartrain Causeway Bridge; Hossein Ghara, P.E., Senior Bridge Design Manager, Volkert, Inc.; G.J. Schexnayder, P.E., Group Manager – Heavy Construction, Boh Bros.; and Q&A panel members Christopher White, P.E., Texas Bridge Leader, Volkert, Inc.; and Jacob Parker, P.E., Project Manager, Volkert, Inc.

Webinar Documents:
Lake Pontchartrain Causeway Bridge & Safety Bay Construction, Past & Present - pdf of presentation
Slide 2: Video Clip - Travel on 1st Lake Pontchartrain Bridge in 1959
Slide 29: Animation – Proposal for Safety Bay Improvements (courtesy of Volkert, Inc.)
Additional Videos:
Animation - Safety Bay Concept (courtesy of Greater New Orleans Expressway Commission, GNOEC)
Video - Safety Bay Construction Drone Footage, August 2019 (courtesy of GNOEC)

Q&A Session – pdf

News - August 20, 2020 - pdf of presentation

Description: The Lake Pontchartrain Causeway is a toll bridge which spans over Lake Pontchartrain connecting Metairie, Louisiana to Highway 190 in Mandeville, Louisiana. The twin bridges were opened in 1956 and 1969 and are listed since 1969 by the Guinness Book of World Records as the World’s longest bridge over water at 23.83 miles long. Since neither bridge has shoulders, with the increase in traffic volume, the need to mitigate automobile accidents prompted the owners to construct Safety Bay Shoulders strategically along the sides of each bridge in 2019 to allow for storage of stranded vehicles until the motorist assistance arrive. This presentation describes how the use of Construction Manager at Risk (CMAR) and Accelerated Bridge Construction (ABC) enabled the delivery of this project on time and on budget and minimized risk for both the owner and the contractor.

 Presentation Photos/Graphics:

1) Aerial view of pile installation

2) Erected precast caps

 

3) Aerial view of marine deck span installation

4) Completed safety bay