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Bow Lake Road over Sherburne Brook

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

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

Bow Lake Road over Sherburne 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 deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2021, making it 4 years old at the 2025 inventory.
It carries about 662 vehicles a day (traffic count year 2023).
Its listed owner is a city or municipal 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

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