MBTA - Merrimack River Bridge
Former Manchester & Lawrence (M&L) branch.
This bridge is a six-span, pin-connected Pratt deck truss, originally designed to carry two tracks, but presently carrying only one. The superstructure was fabricated by Cofrode and Saylor in 1893. In the original drawings, the upper chord and verticals are of steel, while most of the diagonals and lower chords are of wrought-iron bars, pinned in groups of six. Four 15-foot deep Pratt-truss systems, interconnected by girders and struts, support the deck. -Massachusetts Historical Commission (Peter Stott, MBTA Historical Property Survey, 9/1988)
- Warren deck truss bridge over Merrimack River on Railroad (MBTA)
- Lawrence, Essex County, Massachusetts
- Built 1893
- - Cofrode & Saylor of Philadelphia, Pennsylvania
- Philadelphia Bridge Works of Philadelphia, Pennsylvania
- - Boston & Maine Railroad (B&M; BM)
- Commuter Rail
- Massachusetts Bay Transportation Authority (MBTA)
- Warren deck truss
Length of largest span: 140.0 ft.
Total length: 840.0 ft.
Deck width: 37.5 ft.
- Also called
- B&M - M&L Branch Bridge No. 0.32
B&M - M&L Branch Bridge No. 191
- Approximate latitude, longitude
- +42.70130, -71.16529 (decimal degrees)
42°42'05" N, 71°09'55" W (degrees°minutes'seconds")
- Approximate UTM coordinates
- 19/322654/4729918 (zone/easting/northing)
- Quadrangle map:
- Inventory number
- BH 58787 (Bridgehunter.com ID)
- February 1, 2015: Updated by Ian Martin: Added build info. & dimensions
- November 13, 2013: Added by Luke Harden