Rating:
3 votes

Tyngsborough Bridge

Photos 

Tyngborough Bridge

Photo taken by C Hanchey in August 2013

License: Creative Commons Attribution-NonCommercial (CC BY-NC)

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BH Photo #273721

Map 

Street View 

Facts 

Overview
Steel through arch bridge over Merrimack River on MA 113/MA 3A in Tyngsborough
Location
Tyngsborough, Middlesex County, Massachusetts
Status
Open to traffic
History
Built 1931 by the Boston Bridge Works; rehabilitated 1975 and 2012
Builder
- Boston Bridge Works of Boston, Massachusetts
Design
Steel through arch
Dimensions
Length of largest span: 546.9 ft.
Total length: 566.0 ft.
Deck width: 29.9 ft.
Vertical clearance above deck: 12.2 ft.
Recognition
Eligible for the National Register of Historic Places
Also called
Merrimack River Bridge
Approximate latitude, longitude
+42.67604, -71.42122   (decimal degrees)
42°40'34" N, 71°25'16" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/301611/4727682 (zone/easting/northing)
Quadrangle map:
Nashua South
Inventory numbers
MA T09001 (Massachusetts bridge number)
BH 19383 (Bridgehunter.com ID)
Inspection (as of 07/2015)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 48.0 (out of 100)
Average daily traffic (as of 2015)
25,700

Update Log 

  • August 10, 2016: Updated by Christopher Finigan: Added category "Riveted"
  • July 14, 2011: New Street View added by Clark Vance

Sources 

  • Clark Vance - cvance [at] dogmail [dot] com
  • C Hanchey - cmh2315fl [at] yahoo [dot] com

Comments 

Merrimack River Bridge
Posted October 17, 2013, by Tony Dillon (spansaver [at] hotmail [dot] com)

That's a beauty!

Merrimack River Bridge
Posted October 17, 2013, by L D (L [dot] da at gmailcom)

This bridge has undergone a rehabilitation and is now open to traffic again

Merrimack River Bridge
Posted July 14, 2011, by Clark Vance (cvance [at] dogmail [dot] com)

The street view is from a parallel span the looks like it might be a Bailey Truss. Is this parallel bridge temporary for the rehab period or is it there to add lanes at the crossing? Anyone know the story here?

Merrimack River Bridge
Posted July 14, 2011, by john foley (Jcfgrr [at] yahoo [dot] com)

Bridge is presently closed to traffic and under going a complete structural rebuild. All the defective steel is being replaced and the bridge will be repainted.

Also the approches are being redesigned for beter

traffic flow.