The Challenge

  • Evaluate the performance of the bridge during construction

The Bayou Lafourche Bridge is an AccelBridge that utilizes the simple method of compressing the deck by pre-stressed bridge girders. The bridge is located near Monroe, LA. and was constructed in 2016-2017. The project was sponsored by the Federal Highway Administration (FHWA) Innovative Research Deployment Program. As part of the program, a detailed instrumentation system was implemented to verify design assumptions and construction methods.

The Solution

As part of the instrumentation plan, Geocomp installed strain gages on girders and slabs at the pre-cast facility and tie-down anchors and splice plates in the field. The monitoring system was setup temporarily to evaluate the performance of the bridge during the innovative construction sequencing and methods.

After the construction was complete and prior to the bridge opening, a load test was performed on instrumented spans to verify the design response of the bridge

A permanent monitoring system was designed and installed using remote power from solar panels with remote communication provided for data access to Louisiana Technical Research Center in Baton Rouge.

Services Provided

Performance Monitoring

Performance monitoring during construction of new bridge

Load Testing

Performed load test of bridge structure prior to bridge opening

Structural Monitoring

Installed and commissioned remote structural monitoring system

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