Mobile River
The Mobile River is located in southern Alabama in the United States. Formed out of the confluence of the Tombigbee and Alabama rivers, the approximately river drains an area of of Alabama, with a watershed extending into Mississippi, Georgia, and Tennessee. Its drainage basin is the fourth-largest of primary stream drainage basins entirely in the United States. The river has historically provided the principal navigational access for Alabama. Since construction of the Tennessee-Tombigbee Waterway, it also provides an alternative route into the Ohio River watershed.
The Tombigbee and Alabama River join to form the Mobile River approximately northeast of Mobile, along the county line between Mobile and Baldwin counties. The combined stream flows south, in a winding course. Approximately downstream from the confluence, the channel of the river divides, with the Mobile flowing along the western channel. The Tensaw River, a bayou of the Mobile River, flows alongside to the east, separated from as they flow southward. The Mobile River flows through the Mobile-Tensaw River Delta and reaches Mobile Bay on the Gulf of Mexico just east of downtown Mobile.
Biodiversity
The Mobile River Basin historically supported the greatest biodiversity of freshwater snail species in the world, including six genera and over 100 species that were endemic to the Mobile River Basin. During the past few decades, publications in the scientific literature have primarily dealt with the apparent decimation of this fauna following the construction of dams within the Mobile River Basin and the inundation of extensive shoal habitats by impounded waters.Crossings
This is a list of bridges and other crossings of the Mobile River from Mobile Bay upstream to its source at the confluence of the Tombigbee and Alabama rivers. Proposals for a new bridge to carry Interstate 10 over the river have been debated for several years. Currently the Alabama Department of Transportation is conducting an environmental impact study for such a crossing and into the widening of the Jubilee Parkway, which carries Interstate 10 over Mobile Bay. The location of this bridge is of great debate with some parties pushing for a crossing south of the current tunnels while others are opposed to anything south of the Cochrane–Africatown USA Bridge.| Crossing | Carries | Location | Coordinates |
| George Wallace Tunnel | Interstate 10 | Mobile | |
| Bankhead Tunnel | U.S. Route 98 | Mobile | |
| Cochrane–Africatown USA Bridge | U.S. Route 90 U.S. Route 98 | Mobile | |
| 14-Mile Bridge | CSX Transportation | ||
| General W.K. Wilson Jr. Bridge | Interstate 65 |