Mobile sits at the head of Mobile Bay, where the river delta meets salt water, and that geography shapes every drive. I-10 runs west toward Mississippi and east through the George Wallace Tunnel under the Mobile River, then across the Bayway to the Eastern Shore. I-65 begins at I-10 on the city's west side and heads north toward Montgomery, and I-165 links it to downtown and the port. US 90 follows Government Boulevard toward Tillmans Corner and Theodore, while US 98 leaves on Moffett Road toward Semmes.
The tunnel and the Bayway are the pinch points. Traffic backs up at the Wallace Tunnel nearly every weekday and on summer weekends, and a car that overheats or stalls in that line has nowhere to go. Trucks headed to the port and the shipyards add to the load. The Causeway runs beside the Bayway across the delta at water level, and it floods during storms. If you break down near either route, getting the car to a safe spot first and having the repair done there beats a long tow.
On the west side, Airport Boulevard is the main commercial corridor, lined with shopping lots and apartment complexes from Midtown past the University of South Alabama to Mobile Regional Airport. Dauphin Street and Old Shell Road carry traffic through older neighborhoods, and Schillinger Road anchors the growing far west. Most of these places have room to work, so a repair at home, in an office lot or at the curb is usually simple to arrange.