How to reach:
To reach the tidal bench marks from north bound Interstate 295 in Portland, take the Waterfront Exit (Alt. U.S. 1) to Commercial Street, then continue NE along Commercial Street for 0.3 km (0.18 mi) to the Ocean Gateway Pier and Visitor Center. The bench marks are located within 1.6 km (1 mi) radius of tide station. The tide gauge is located on a separate concrete platform off the SE end of the pier. It is accessible by a steel walkway. The station is 285 m from the locked entrance gate.