A Small Warren Pony Truss Bridge over Boggy Creek, in Lavaca County, Texas. According to the state site it is 51 feet long and 15 feet wide, the build date seems to be suspect, as it is a lot older than it states.

Location:

Latitude: 29.416590
Longitude: -97.045780

Sources:

http://www.mapquest.com/maps/map.adp?searchtype=address&formtype=latlong&latlongtype=decimal&latitude=29.41659&longitude=-97.04578

http://www3.cpa.state.tx.us/bridges.nsf/ffac68c5f26c0da3862569810062286b/a4483921388c39308625698f007517f2?OpenDocument