I picked up a Forest Service map recently that has Modoc on it. about half way out they show a parking area that can be accessed by riding forest service road 632 to its end. Question is, is this near the "bridge to no where" or the spot where the trail goes to the right with a spur that continues to go up a hill?
note: the back entrance to Modoc is at the end of fs rd 632a
"The more I study nature, the more I stand amazed at the work of the Creator" -Louis Pasteur
Actually, the bridge to nowhere is the bridge to FS 632B. Go over bridge, go left. Trail peters out. But if you go straight up the fall line, you will come to the end of a gravel road. And this is FS632B.
The bridge was built so the trail would no longer cross the creek we call "jaws". There is a rare plant growing in that creek crossing, so the USFS routed the trail around the creek crossing. A spot for the bridge was flagged, very close to the creek crossing. But when it came time to build the bridge, it was built where it is now and not where it was flagged to be.
The idea was you would ride over the bridge and take a 90 degree right turn, and then come back to the trail on the other side of the creek. The alternate trail was built, but the existing trail was never closed.
Over time, the alt trail just died and this became the bridge to no where.