DOT plans $2.52B loan for Alabama I-10 bridge project

What is the DOT funding on Alabama's I-10 corridor?

The Department of Transportation plans to loan up to $2.52 billion for Alabama's Mobile River Bridge and Bayway Project, a rebuild of the Interstate 10 freight corridor crossing Mobile Bay. The loan will fund replacement of aging bridge infrastructure on a route that carries Gulf Coast container traffic between Florida and Texas.

The Mobile River crossing and Bayway segment currently operate as bottlenecks for trucks moving between the Port of Mobile and western markets. The existing bridge structure dates to the 1970s and lacks modern lane width and shoulder clearance for current truck dimensions. Congestion during peak shipping periods forces detours that add 30 to 50 miles to routes connecting Mobile's container terminals to I-65 northbound.

Why this corridor matters for truck operations

I-10 through Mobile handles freight moving between the Port of Mobile, the ninth-largest container port in the U.S. by TEU volume, and distribution centers in Alabama, Mississippi, and Louisiana. The corridor also serves as the primary east-west route for trucks avoiding congestion at Houston and New Orleans during hurricane season or port labor disruptions.

Fleets running regular lanes between Florida and Texas currently face bridge weight restrictions and lane closures on the existing Mobile River span. The rebuild will eliminate posted weight limits and add dedicated truck lanes, reducing delay time that currently averages 20 to 35 minutes during weekday afternoon peaks.

What the loan covers

The $2.52 billion DOT loan will fund construction of new bridge spans, approach roadway widening, and Bayway reconstruction. The project includes replacement of the existing two-lane bridge with a six-lane structure featuring 12-foot lanes and 10-foot shoulders, meeting current Interstate design standards for truck clearance and emergency stopping.

Federal loan terms were not disclosed in the announcement. DOT's Transportation Infrastructure Finance and Innovation Act (TIFIA) program typically offers loans at Treasury rates with repayment periods up to 35 years. Alabama will repay the loan through toll revenue collected on the new bridge, though toll rates and exemptions for commercial vehicles have not been finalized.

When construction starts

The DOT announcement did not specify a construction start date or completion timeline. Alabama's transportation department has not yet released a project schedule. Federal environmental review and final design work remain in progress.

Fleets should expect lane restrictions and detour routes once construction begins. The existing bridge will remain open during most of the build, but periodic closures for demolition and tie-in work will force trucks onto alternate routes through downtown Mobile or north via I-65 to I-20.

What this means for Gulf Coast routes

Once complete, the new I-10 crossing will cut transit time for trucks running Mobile-to-Texas lanes by eliminating the current bridge bottleneck. Fleets operating regular schedules between Florida and western markets will gain a more reliable route option, reducing the need to build extra time into delivery windows to account for Mobile Bay delays.

The project also positions Mobile as a more competitive alternative to Houston and New Orleans for shippers routing Asian imports to southeastern distribution centers. Faster truck access to I-65 northbound will reduce drayage costs for containers moving from Mobile's terminals to warehouses in Birmingham, Nashville, and Memphis.