The Deer Isle Bridge encountered wind stability problems that were similar to a bridge found in which U.S. state?
Deer Isle Bridge The Deer Isle Bridge is a suspension bridge spanning Eggemoggin Reach in the state of Maine. The bridge is the only vehicular connection from the Maine mainland to Little Deer Isle, one of the segments that make up the island. The span was completed in March 1939 with a main span of 329 meters (1,088 ft). The bridge was designed by Holton Duncan Robinson and David Bernard Steinman. It encountered wind stability problems that were similar to those of the Whitestone Bridge and the original Tacoma Narrows Bridge, which collapsed shortly after it opened. The problems led to modifications which included numerous cable stays connecting cables to the tower and tower to the deck. The span today carries two narrow lanes of State Route 15.
Marion Street Bridge The Marion Street Bridge is an automobile bridge located in Salem, Oregon, United States. It spans the Willamette River to connect Salem and West Salem, and acts as a conduit for Oregon Route 22. The bridge carries vehicular traffic one way westbound. Traffic includes two lanes that flow onto the bridge from Marion Street, vehicles turning right from Commercial Street, and traffic from a quarter-loop on-ramp from Front Street that was added in 1981. Construction began in December 1952 and the bridge opened in 1954, after taking nearly three years to complete. The bridge was built to complement the Center Street Bridge, which switched from two-way traffic to eastbound-only, later expanding to four lanes in 1982. At the time of its opening, the Marion Street Bridge was the longest bridge of its type west of the Mississippi River.