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MBTA - Neponset River Bridge (Dorchester Branch MP 07.07)



Bridge carrying MBTA Dorchester Branch (MBTA Fairmount Line) over the Neponset River at milepost 07.07. Crosses between the Hyde Park neighborhood of Boston and Milton.

MBTA Historical Property Survey 

Written by Mary E. McCahon

"The 1916, two-track deck plate girder bridge fabricated by the Phoenix Bridge Company, one of the most prolific and long-lived manufacturers in the country, was built on the original Midland Railroad Company right-of-way. The 11-mile local line from Islington (W. Dedham) to Boston was never a financial success, and after many reorganizations, it became part of the vast New York, New Haven, and Hartford system in 1898.

The present stringer deck plate girder was installed by the New Haven Railroad, and it replaces the 1889 bridge that was not strong enough to handle the increased weight of rolling stock which had become dramatically heavier during the late-1890's and early-1900's. The replacement of girder bridges in the 1900-1915 era was common. The bridge does not exhibit any unusual technical features and is both historically and technically representative of the period."

Massachusetts Historical Commission (Mary E. McCahon, MBTA Historic Property Survey, 11/1987)


Deck plate girder bridge over Neponset River on MBTA Dorchester Branch (MBTA Fairmount Line)
Milton, Suffolk County, Massachusetts, and Norfolk County, Massachusetts
Open to railway traffic
Built 1916 by Phoenix Bridge Company
- F.H. Barnhardt
- Phoenix Bridge Co. of Phoenixville, Pennsylvania
- CSX Railroad (CSX)
- Commuter Rail
- Conrail (CR)
- Massachusetts Bay Transportation Authority (MBTA)
- New York & New England Railroad (NYNE)
- New York, New Haven & Hartford Railroad (NH)
- Penn Central Railroad (PC)
Steel deck plate girder carrying 2 track spaces
Total length: 75.0 ft.
Also called
NH - Bridge No. 07.07
Approximate latitude, longitude
+42.26106, -71.10851   (decimal degrees)
42°15'40" N, 71°06'31" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/326090/4680914 (zone/easting/northing)
Quadrangle map:
Boston South
Inventory number
BH 66595 (Bridgehunter.com ID)

Update Log 

  • March 21, 2015: Essay added by Erich Pfistner