How to reach:
To reach the tidal bench marks from the toll booths on the west end of the Walt Whitman Bridge proceed 0.2 km (0.1 mi) west to exit 47 (to I-95) but keep right and follow signs to Front Street, turn left and proceed 0.5 km (0.3 mi) north on Front Street to Oregon Avenue, turn right and proceed 1.1 km (0.7 mi) east to Christopher Columbus Avenue, turn left and proceed 4.8 km (3.0 mi) north on Christopher Columbus Avenue to Municipal Pier No. 11 North (Marine Police and Fire Boat Pier) underneath the Benjamin Franklin Bridge. The bench marks are located in the vicinity of the pier and west along Arch Street. The tide house was located on the SE end of the pier.