View this photo at bing.com
BH Photo #213786
Looks like there may be a structure at 31.633849,-91.208637
It's not over Coles Creek, however.
Actually, the image above is the correct bridge at this location, as the bridge isn't/wouldn't be visible from the highway.
Furthermore, the bridge in your photograph doesn't appear next to US61 in the aerial imagery from Google, or in Google's Streetview at Coles Creek.
The bridge in the picture above is not the one I found on 2/1/2014. The bridge I found is next to US Hwy 61 just northeast of Cannonsburg, MS and is a wooden trestle. I would suggest that the picture above is further northeast of Cannonsburg just southeast of Stampley, MS over the Stampley Creek or about 3 mimles southeast of Fayette, MS over the Mudd Island Creek. In the picture above no road or highway is visible and I took the picture attached from Hwy 61,0
1988 topo quad shows this bridge on "Old Railroad Grade". 1953 NH 15-3 Natchez 1:250,000 quad shows Illinois Central RR
It appears to be a railroad bridge, but I can't find any tracks along its path on the satellite view. I found it on Bing.