Mount Hope Bridge

41.639833333333 - 71.258027777778Koordinaten: 41 ° 38 ' 23.4 "N, 71 ° 15' 28.9 " W

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Mount Hope Bay

The Mount Hope Bridge is a suspension bridge that leads from USA Location Bristol, Rhode Iceland across the narrowest part of Mount Hope Bay on the island of Rhode Iceland in the Narragansett Bay.

Description

The road bridge has two lanes and on both sides of a very narrow walkway that is for emergencies only and is not approved for general use. Cyclists can use the road, but are warned to take special caution because of possible strong winds. The access roads are only a few meters above sea level. The bridge therefore ramps in order to achieve the necessary height for the required clear height of 41 m (135 ft). The entire length of the construction including access roads is therefore given as 1868 m ( 6130 ft).

The suspension bridge has a main span with a span of 366 m ( 1200 ft) and two side panels with spans of 229 m (750 ft). The length between the anchor blocks is 914 m (3000 ft). The 8.53 m (28 ft) wide track support is stiffened by means disposed below the road surface open truss structure. It is supported by two 28 -cm-thick supporting cables, running high over the 89 m (285 ft) pylons to massive anchor blocks on the shore or near the shore. The suspension cable obtained by the air spinning from each 2450 wires.

History

Previously there was a ferry service between the mainland and the Rhode Iceland, which had to be set in stormy weather and ice conditions in the winter though. As a result of increased traffic received in the 1920s, the private New Hope Bridge Company the license to build a bridge.

The bridge was designed by Robinson & Steinman. It was also the first bridge in the David B. Steinman as Chief Engineer responsibly directed the construction. Construction began on 1 December 1927 to work for the pier foundations and anchor blocks, t on the mainland side on 16000 and on the coast 25000 t are heavy. The requirement for the bridge clear height of 135 ft goes back to the Brooklyn Bridge, in which this measure was first requested and has been applied since then with the most bridges in the larger area of New York. Used In preparing the suspension cable of entrepreneurs McClintic - Marshall Company against Steinman's reservations newly developed, hot -drawn wires. After the completion of the cable and, just four months before the scheduled opening date a few broken strands of wire were discovered. The suspension cable along with the hangers therefore had to be removed and replaced with new ropes made of cold-drawn wires. This meant that the built of the same hot -drawn wires supporting cables were also exchanged at this time, also built by McClintic - Marshall Ambassador Bridge. The bridge was finally opened with a delay of five months on 24 October 1929.

The bridge was on September 21, 1938 one of the most severe hurricanes that have hit the area, without significant damage.

In 1954 the bridge company was lack of sufficient toll revenues under settlement administration ( receivership ) and placed over the bridge from the State, who is also tolling ceased in 1998. During the last decades various maintenance activities were carried out, especially on the support cables and hangers. The bridge was re- painted in the Steinman preferred green.

In 1976, the Mount Hope Bridge was evidenced by an entry in the National Register of Historic Places under monument protection.