The cache container is not located near the base of the bridge.
There is no reason to go underneath it unless you just want to look
around. Once you zero in on the location, it's a very simple find.
You're looking for a regular size Lock-N-Lock container. Use
caution retrieving the cache. Terrain could be steep, muddy, and
overgrown. Please post a picture of yourself at the bridge.
After deciding to place this cache, I found out that there is an
Earthcache close by which will also bring you to this location as
part of the requirement. If you have the time you should try that
one too
(GC19AWX). This cache also qualifies towards 5BizzyBs Under
Cover Ohio Challenge (GC1KQ0J) found
here.
Congrats to it's cached dude for the FTF!