Take the Corydon exit and take 135 North to Brownstown. I'm from Corydon and lived in Brownstown for a year. I even take that route to go from Bloomington to Corydon. They made drastic improvements to Hwy. 135 between Palmyra and Salem a few years ago. Straightened out the curves and added passing zones, now it's not a bad drive at all. 1 hour from Corydon to Brownstown.