US 4 over NH155A

Strafford County, New Hampshire · rated Poor in the 2025 National Bridge Inventory

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

US 4 over NH155A in Strafford County, New Hampshire, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1968 and reconstructed in 2014, making it 57 years old at the 2025 inventory.
It carries about 13,387 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 13 of the 136 inventoried bridges in Strafford County rated poor (9.6%); 13 (9.6%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 83 ft
Location	.5 Mi. From Lee T.l.
NBI structure number	007000740013000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Nh 16 Sp Tpk Ramp over NH125	2009	44,530	Good
Nh 16 Sp Tpk over New Bellamy Lane	1955	42,313	Fair
US202 Nh 16 Sp Tpk over Ten Rod Road	2012	41,600	Good
US202 Nh 16 Sp Tpk over NH202A (walnut Street)	1957	41,600	Good
Nh 16 Sp Tpk over Cocheco River	2010	39,653	Good
Nh 16 Sp Tpk over Axehandle Brook	1957	39,505	Good