Mountain Road over Rockaway Creek
Hunterdon County, New Jersey · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mountain Road over Rockaway Creek in Hunterdon County, New Jersey, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1901, making it 124 years old at the 2025 inventory.
- It carries about 169 vehicles a day (traffic count year 2023).
- Its listed owner is the county 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.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (40.70087, -74.7866)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Masonry deck arch |
| Length | about 21 ft |
| Location | 0.9 Mi West of CR 517 |
| NBI structure number | 100T132 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New Jersey department of transportation.
Busiest bridges in Hunterdon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I-78 & Ramp R over Beaver Brook | 1948 | 130,244 | Fair |
| I-78 over Beaver Brook | 1941 | 130,244 | Poor |
| 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 |
All bridges nearby: Hunterdon County, NJ bridge conditions · every bridge in Hunterdon County · New Jersey bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.