Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, New London County, CT

Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th century. The bridge also has historical significance because it completed the State Highway Department's improvement program for coastal Route 1, Connecticut's most important "Trunk Line" highway.

Unprocessed Field note material exists for this structure: N1493

Survey number: HAER CT-174

Building/structure dates: 1922 Initial Construction

Building/structure dates: after 1955 Subsequent Work

Building/structure dates: 1937 Subsequent Work

vehicular bridges bascule bridges transportation reinforced concrete construction drives concrete counterweights connecticut mystic bridge mystic river bridge mystic river groton new london county new london american bridge company thomas e brown justine christianson bruce clouette jeremiah fitzgerald patrick fitzgerald historic american engineering record j e fitzgerald company thomas e brown and son waddell and son john alexander low waddell ultra high resolution high resolution industrial history library of congress

1969 - 1980

Library of Congress

http://www.loc.gov/

No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html