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Naziare Biron Bridge


Nazaire Biron Birdge

Side elevation from boat launch

Photo taken by Nick Boppel in March 2020


BH Photo #469018



The Nazaire Biron Bridge, known by locals as the Kelley Street Bridge, is a high-level multi-span steel stringer bridge that crosses the Piscataquog River at the location where Kelley Street and Pinard Street converge. The bridge is notable, especially on a local scale, not only for its towering height but also for its location directly below the Kelley's Falls Dam, which is the former hydroelectric dam for Manchester prior to Amoskeag Falls and is still used an an emergency source of power.

The bridge was closed to all traffic in 2012 for a major rehabilitation project which included substantial strengthening of the piers and abutments to prevent raging water from the dam waterfall from damaging the bridge. It was reopened in 2013.


Steel stringer bridge over Piscataquog River on Kelley Street/Pinard Street
Manchester, Hillsborough County, New Hampshire
Open to traffic
Built 1973 to replace previous Kelley Street Bridge; Rehabilitated 2012 with full bridge closure
Steel stringer
Length of largest span: 190.0 ft.
Total length: 908.0 ft.
Deck width: 34.0 ft.
Also called
Kelley Street Bridge
Approximate latitude, longitude
+42.99305, -71.49554   (decimal degrees)
42°59'35" N, 71°29'44" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/296565/4763064 (zone/easting/northing)
Average daily traffic (as of 2017)
Inventory number
BH 88775 (Bridgehunter.com ID)
Inspection report (as of July 2018)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 94.1 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 30, 2020: Added by Nick Boppel

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  • Nick Boppel - nickboppel01 [at] gmail [dot] com