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I-93 NB over Beaver Brook

Rockingham County, New Hampshire · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

I-93 NB over Beaver Brook in Rockingham County, New Hampshire, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
It was built in 2019, making it 6 years old at the 2025 inventory.
It carries about 41,528 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 200 of the 309 inventoried bridges in Rockingham County rated good (64.7%); 22 (7.1%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 78 ft
Location	at Londonderry Tl
NBI structure number	006300510007100
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the New Hampshire department of transportation.

Bridge	Built	Vehicles/day	Condition
I-95 over Access Road	1950	86,429	Fair
I-95 over Maplewood Avenue	1970	76,465	Fair
I-95 over Preble Way CSX	1971	74,766	Fair
I-95 over Piscataqua River	1971	74,766	Fair
I-95 over Market Street	1970	70,573	Good
US 4 Nh 16 Sp Tpk over Shawayttuck	1983	68,236	Good