From Highway 270, exit at Dorsett Rd (exit 17). Go east on Dorsett, approximately 0.1 miles. Turn right (south) on Progress Parkway and go approximately 1 mile. Turn left (east) on West Port Plaza Drive and Commercial Bank is right there.

From Highway 270, exit at N. Lindbergh Blvd. Take Lindbergh approximately 1.8 miles to Washington Street. Go right (south-east) on Washington, approximately 0.3 miles. Commercial Bank is on the right.

From Highway 64/40 going west, exit at Long
Road. Make a right turn onto Chesterfield Airport Rd. Commercial Bank is on the right.
Going east on 64/40, exit onto Chesterfield
Airport Road just past the Danial Boone Bridge. Continue for apx. 1.5 miles.
Commercial Bank is on the left.