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| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date and Builder/Engineer | |
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Bridge Street Bridge
| Bridge Street Over Merrimack River | Lowell: Middlesex County, Massachusetts | Metal Cantilever 10 Panel Rivet-Connected Warren Through Truss, Fixed | 1937 By Builder/Contractor: American Bridge Company of New York, New York |
| Technical Facts |
| Main Span Length | Structure Length | Roadway Width | Main Spans | NBI Number |
| 197 Feet (60 Meters) | 474 Feet (144.5 Meters) | 40 Feet (12.2 Meters) | 3 | L150192FTDOTNBI |
This bridge is significant as a rare example of a small-scale through truss cantilever. Most cantilever bridges were built on much larger rivers, and as part of their design also feature towers that loom over the rest of the truss. With a smaller span, and lower tower height, this bridge offers a much different appearance than the standard cantilever truss bridge. It is historically and technologically significant as an example of a relatively small-scale application of cantilever truss bridge engineering. This bridge also retains good structural and historic integrity, and its continued maintenance is logical choice for both preservation and fiscal purposes.
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