Directions to Union Green Address: 5793 North Green Street Brownsburg, Indiana 46112 Cross Streets: Main Street and S. Green St. in Brownsburg From Downtown Indianapolis: Go north on I-65 North and then take exit 121 for Lafayette Rd. Take W 56th St. and E. County Rd 600 N. to N. Green Street in Brownsburg. Turn left onto North Green St. and Union Green will be on your left. From Avon: Head north on IN-267 for 8 miles. Then Union Green will be on your right.