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Berkley–Dighton Bridge

The fourth Berkley–Dighton Bridge is a four-span concrete arch bridge with closed spandrel walls of cast-in-place concrete, using pile-supported abutments and piers. The bridge was made such that it appears to be constructed of stone masonry rather than concrete. The two end spans are 74 feet (23 m) and the two center spans are 92 feet (28 m) for a total bridge length of approximately 350 feet (110 m).

History
The first bridge at the site was built in 1801. There was no bridge on the site from 1853 to 1873. The third bridge was dedicated in 1896 and demolished in 2010. A temporary bridge served from 2010 to 2015. The current bridge opened to traffic on August 28, 2015 In Fall 2014, the arches were built from segments trucked in. The arches are ten segment widths wide and were brought in as half-arches. The bridge is wider than the previous bridge by a total of approximately , split between both sides of the old bridge, for a total of defined as two traffic lanes plus a sidewalk on the south (downstream) side of the bridge, similar to the previous bridge. A minimum of vertical clearance must be maintained from the mean high water line at the main span, requiring the roadway to be raised approximately higher than its previous level. Other improvements include ADA-compliant sidewalks, wheelchair ramps, and driveway transitions, as well as better drainage, curbing, signage, guardrail, and pavement markings. ==Temporary bridge==
Temporary bridge
A temporary one-lane bridge was provided during construction to the south of the permanent bridge site. The temporary bridge had improved weight capacity, allowing emergency vehicles to use it. The structure was a 3rd generation Bailey bridge. Once the main bridge opened, the temporary bridge was removed. == See also ==
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