There is a bridge out on Hwy 135 just south of Morgantown, right after you pass the Mexican Restaurant.
Here is a est address of the bridge. 39.366935, -86.261521
If you are coming down Hwy. 135 you can take lick Creek Rd. south out of Morgantown toward Helmsburg. There you will hook you up with Hwy 45, you can take that east to Hwy. 135 at Beanblossom. Then south to Nashville, and on to Bloomington to pick up Hwy 446, and south.