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I-78 over Beaver Brook

Hunterdon County, New Jersey · rated Poor in the 2025 National Bridge Inventory

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

I-78 over Beaver Brook in Hunterdon County, New Jersey, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
It was built in 1941 and reconstructed in 1968, making it 84 years old at the 2025 inventory.
It carries about 130,244 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 26 of the 373 inventoried bridges in Hunterdon County rated poor (7.0%); 26 (7.0%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	4	Poor condition

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

Bridge	Built	Vehicles/day	Condition
Rte I-78 & Ramp R over Beaver Brook	1948	130,244	Fair
I-78 over Branch Rockaway Creek	1966	129,446	Fair
I-78 EB over Beaver Brook	1958	109,955	Fair
I-78 over Tunnel Road	1960	108,465	Fair
I-78 EB over County Route 523	1965	107,826	Fair
I-78 EB over Leigh Street	1958	99,483	Fair