US-11 LAKE PONTCHARTRAIN BRIDGE
The US 11 Lake Pontchartrain Bridge is an historic bridge (built in 1928) carrying US-11 over Lake Pontchartrain. The bridge consists of 717 reinforced concrete spans and two steel movable spans, for a total length of 24,922 ft. Past inspections revealed heavy spalls and cracks on the bridge from deck to pile bent.
Major tasks carried out by SDR included:
- Performing in-depth inspection of the superstructure and substructure in order to determine the level and type of structural deficiencies designated in the structural inventory reports.
- Performing chloride ion penetration analysis to determine the diffusion coefficient and expected service life of the bridge.
- Load rating the bridge using traditional analysis as well as refined non-linear 3-D finite element analysis.
- Conducting diagnostic field load tests and compiling an evaluation report with repair recommendations.
- Rehabilitation design of the bridge, including design documents, CADD drawings, technical special provisions, and construction cost estimation.
![US-11 Lake Pontchartrain Bridge-1](https://www.sdrengineering.com/wp-content/uploads/2019/06/US-11-Lake-Pontchartrain-Bridge-1.jpg?v=1582932132)
![US-11 Lake Pontchartrain Bridge-2](https://www.sdrengineering.com/wp-content/uploads/2019/06/US-11-Lake-Pontchartrain-Bridge-2.jpg?v=1583161208)
![US-11 Lake Pontchartrain Bridge-3](https://www.sdrengineering.com/wp-content/uploads/2019/06/US-11-Lake-Pontchartrain-Bridge-3.jpg?v=1583161203)
![US-11 Lake Pontchartrain Bridge-4](https://www.sdrengineering.com/wp-content/uploads/2019/06/US-11-Lake-Pontchartrain-Bridge-4.jpg?v=1583161199)
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