

Four states, five waterways, one corridor. Our job: Move it Forward.
The Tennessee-Tombigbee Waterway Development Authority is the four-state compact of Alabama, Kentucky, Mississippi, and Tennessee, created to champion the waterway and the Marine Highway M-65 corridor it anchors. The Corps of Engineers runs the locks; we make the case for everything the waterway can do.
The corridor's promotional engine.
Established by interstate compact and ratified by Congress in 1958, before the first shovel of construction, the Authority exists to make sure the waterway delivers on its promise.
Promote
Drive commerce, industrial development, and recreation along the Tennessee-Tombigbee Waterway and the full M-65 corridor: marketing, business development, and stakeholder engagement.
Inform
Serve as the central repository for corridor data and research, from the interactive infrastructure map to the economic impact studies that back every claim on this site.
Connect
Link shippers, site selectors, and communities with ports, economic development partners, and the local leaders who get deals done across 116 counties.
Convene
Bring the corridor together, most visibly at the annual Tenn-Tom Conference, where shippers, developers, ports, and policy partners chart the year ahead.
A federal marine highway, sponsored by TTWDA.
Marine Highway M-65 is a federally designated freight corridor of more than 1,300 miles: the Mobile, Tombigbee, and Black Warrior Rivers from the Port of Mobile to the Port of Birmingham, the Tennessee-Tombigbee Waterway, and the entire Tennessee River from Paducah, Kentucky to Knoxville, Tennessee, plus the commercial channels, ports, and harbors that serve them. TTWDA is the route's official sponsor, designated by the U.S. Department of Transportation's Maritime Administration.
- Designated
- 2010, U.S. Marine Highway Program (MARAD)
- Sponsor
- Tennessee-Tombigbee Waterway Development Authority
- Connects
- M-10 at Mobile · M-55 at Cairo, Illinois
- Landside
- Interstate 65 corridor
- Reach
- Five river systems · four states · 116 counties
Small staff. Big corridor.
Day to day, the Authority is run from Columbus, Mississippi: a three-person team working the full length of the waterway.
Reach the office
- Office
- P.O. Drawer 671 · Columbus, MS 39703
- Visit
- 318 7th Street North, Columbus, MS
- Phone
- 662.328.3286
- ttw@tenntom.org
The people and the story behind the Authority.
Put the corridor to work for you.
Whether you ship, build, or explore, start with a conversation.




