The money will be used to repair and expand the Port of Gulfport, the third-busiest container port along the Gulf of Mexico.
The money is part of $5.5 billion in HUD Community Development Block Grants approved by Congress after Hurricane Katrina. The Mississippi Development Authority, which answers to Barbour, is charged with administering the grants.
The 210-acre expansion features a new shipping terminal and channel as well as three new casinos and as many as 3,000 hotel rooms.