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.
Indian Fish Trap State Preserve Indian Fish Trap State Preserve, also known as the Indian Fish Weir, is a historic site located near the Amana Colonies in rural Iowa County, Iowa. The fish weir is an array of rocks in a V-shaped formation in the Iowa River. It is the only structure of this kind in Iowa. It is not known when the fish weir was built, possibly in either the Late Prehistoric period or Early Historic period. Glacial boulders from a nearby bluff were probably used to construct it. Each wing of the dam is about 155 ft in length. The fish were thought to be herded toward the vertex of the "V" where they would be easier to net or spear. They were then placed into an adjacent holding pool. Early pioneers discovered the weir, and it was included on a General Land Office map in the 1840s. Archaeologist Charles R. Keyes wrote about the weir in 1925.