Martins Mill Bridge is a great place for photos, picnicing or tubing.
The campground used to offer free, home-made ice-cream on Sunday to everyone at the park.
First, take Route 63 to Cearfoss, go thru the roundabout and head toward Greencastle.
Turn left on Weaver (I think, anyhow, it's the 1st road past the Mennonite Church - HUGE old tree on the right beside the turn-off road).
Follow the winding road, stop at the STOP sign, do a little swing to your rigt and go DOWN Martins Mill Road (it's NOT a thru-road). The park is on your right. The bridge is not strong enough for today's heavy cars, so it's closed, but you can get some really nice shots from the banks, or climb in the creek and get your pix that way.
The directions Yoss provided is NOT quite right, it forgets the turn-off road (the one that I 'think' is Weaver).
If all else fails, EVERYONE in that area knows where it is, just stop and ask directions once you get close.
Or...if your sex forbids asking for directions, take a woman, we're not prohibited by law from asking directions.