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Advanced design for Mobile's bridges

Opportunity

In the Mobile, Alabama area, there is a need to increase the capacity of I-10 to meet existing and predicted future traffic volumes and to provide a more direct route for vehicles transporting hazardous materials, while minimizing impacts to Mobile’s maritime industry.

Solution

A new cable-stayed bridge will be constructed over the Mobile River, which will tie into the existing I-10 interstate system. Improvements will be made to the existing interchanges and new interchanges will be constructed along I-10 and US-90 in Mobile and Baldwin Counties.

The project also includes the widening of the I-10 Bayway Bridge, an 8-mile (13-kilometer) concrete structure that will be widened from four lanes to eight lanes.

Outcome

Mott MacDonald is responsible for the development of 12 of the 21 planned interchange configurations and schematic designs, including improving existing interchanges and developing new interchange configurations along the I-10 corridor and US Highway systems.

Close coordination with Alabama Department of Transportation and the Federal Highway Administration is key to streamlining the environmental and preliminary design process. Traffic engineering and interchange modification studies will assist in a successful design process.

Construction is expected to begin in 2019.

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