This is the underside of the Manassas Guth Bridge which crosses 108 feet over the Jordan creek in Lehigh County Pennsylvania. It is one of several covered bridges that span that creek and one of two located in “Covered Bridge Park”. The bridge was built in 1868 and is currently open to vehicular traffic.
I took this on 9-15-2009, shot as seven bracketed RAW frames then combined into an HDR and tone mapped in Photomatix Pro with some extra work done in Topaz Adjust.
I know the hotshoe bubble level I had on the camera indicated that the camera was completely level when I shot this so my only assumption is that the bridge is somewhat crooked, at least on the underside.

