Special Bridge Conditions Legend:R - Former location of relocated bridge. ! - At risk for demolition or destruction.
X - Confirmed demolished or
collapsed. S
- Dismantled and/or in storage. L -
Severe loss of historic integrity due to alteration.
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Bridge Street Over Merrimack River in Rocks Village: Essex County, Massachusetts, United States
Metal Rivet-Connected Double-Intersection Warren Through Truss, Movable: Swing (Rim Bearing Center Pier) and Approach Spans: Metal Rivet-Connected Truss, Fixed
Length: 812 ft.
Main Span: 192 ft.
Roadway: 24 ft.
Main Spans: 1
Built 1883
By: Boston Bridge Works of Boston, Massachusetts
Sewalls Falls Road Over Merrimack River in Concord: Merrimack County, New Hampshire, United States
Metal 9 Panel Rivet-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 660 ft.
Main Span: 167 ft.
Roadway: 16.4 ft.
Main Spans: 2
Built 1915
By: Berlin Construction Company of Berlin Connecticut
and John W. Storrs of Concord, New Hampshire (Storrs and Storrs of Concord, New Hampshire)