From Houston to Postoffice St.:
Travel Interstate 45 South (Gulf Freeway) to the Galveston Causeway. Soon after crossing the Causeway, I-45 becomes Broadway (SR-87, Ave. J). Continue traveling along Broadway for approximately 2.8 miles. Turn left on 21st Street and travel north approximately .3 miles to Postoffice St. (Ave. E). Turn right onto Postoffice. Old Cellar Bar will be on your right at 2015 Postoffice.
From Bolivar Peninsula to Postoffice St.:
Starting from Crystal Beach, travel approximately 10.7 miles to the Bolivar Ferry. Upon exiting the Ferry, take Ferry Road (SR-87) and head southeast approximately .9 miles. Turn right (west) onto Harborside Drive. Travel approximately 1.4 miles along Harborside Dr. Turn left (south) onto 21st Street and travel approximately .3 miles to Postoffice St. (Ave. E). Turn left onto Postoffice. Old Cellar Bar will be on your right at 2015 Postoffice.