This image shows the Old Vicksburg Bridge carrying a local highway and rail line across the Mississippi River at the city of Vicksburg, Mississippi.
The description states:
MISSISSIPPI RIVER BRIDGE, VICKSBURG, MISSISSIPPI
Looking down on one of the many barges daily plying the Mighty Mississippi, the bridge at Vicksburg offers a crossing for both trains and autos.
–The bridge was built in 1930 to carry both autos and trains, but was converted to train operation only in 1998 when a modern highway bridge was built nearby.
The image likely dates from the 1950s.