Driving Instructions Directions to CAS Headquarters   Take I-74 to Exit 11, Harrison Rybolt, turn South From I-74 East Bound, turn right onto Rybolt Rd From I-74 West Bound, turn left onto Harrison Ave, then turn right onto Rybolt Rd Turn right (west) onto Wesselman Rd at the four way stop light, at the bottom of the hill Turn left (west) onto Zion Hill Rd Turn right (north-west) onto Zion Rd. Follow Zion Rd, CAS is on your right before you reach the park entrance. From the South West of Cincinnati, and the Ohio River: Follow Brigetown Rd. West through Cleves. After passing Dog Trot Rd. Turn next Right onto Zion Rd. Stay Right at fork in road. Continue on Zion to CAS.