MOUNTAIN ROAD
Carrying MOUNTAIN ROAD over ROCKAWAY CREEK
0.9 MI WEST OF CR 517, Hunterdon, New Jersey
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MOUNTAIN ROAD
The MOUNTAIN ROAD bridge in Hunterdon, New Jersey carries MOUNTAIN ROAD over ROCKAWAY CREEK. It was built in 1901, making it 125 years old today. The structure is built primarily of masonry and spans 1 section, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 169 vehicles, placing it in the lower-traffic tier of New Jersey bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show superstructure at 4/9, substructure at 7/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 18.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MOUNTAIN ROAD compares
Live comparison across New Jersey.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1901
- Material
- Masonry
- Number of Spans
- 1
- Structure Length
- 6.7 m (22 ft)
- Deck Width
- 4.8 m (16 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 169 vehicles/day
- Structure Number
- 100T132
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The superstructure (beams and supports above the deck) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
MOUNTAIN ROAD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare MOUNTAIN ROAD against other structures in Hunterdon and across New Jersey. New Jersey bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for MOUNTAIN ROAD?
MOUNTAIN ROAD in Hunterdon, New Jersey, superstructure rating of 4/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is MOUNTAIN ROAD inspected?
MOUNTAIN ROAD's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 169 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MOUNTAIN ROAD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for MOUNTAIN ROAD?
MOUNTAIN ROAD has an NBI inventory load rating of 18.1 metric tons.
Who is responsible for maintaining MOUNTAIN ROAD?
MOUNTAIN ROAD is owned and maintained by County Highway Agency.
How old is MOUNTAIN ROAD and does age affect safety?
MOUNTAIN ROAD was built in 1901, making it 125 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.