Amboy Ave (CR 653) over Spa Spring Creek
Middlesex County, New Jersey · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Amboy Ave (CR 653) over Spa Spring Creek in Middlesex County, New Jersey, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1979, making it 46 years old at the 2025 inventory.
- It carries about 6,491 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 409 of the 563 inventoried bridges in Middlesex County rated fair (72.6%); 24 (4.3%) 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 fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.54126, -74.27398)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 36 ft |
| Location | 0.37 miles north of CR654 |
| NBI structure number | 121B055 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New Jersey department of transportation.
Busiest bridges in Middlesex County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Tpknso/nsi/sni/sno over Colonial Pipelines | 1947 | 196,710 | Good |
| Garden St Parkway over S Br Rahway River | 1948 | 194,231 | Fair |
| Washington Ave over I-287 | 1962 | 190,050 | Fair |
| Nj Turnpike(i-95) over Mill Brook | 1950 | 175,389 | Fair |
| Nj Turnpike(i-95) over Mill Brook | 1950 | 175,376 | Fair |
| Nj Turnpike(i-95) over Mill Brook | 1950 | 175,376 | Fair |
All bridges nearby: Middlesex County, NJ bridge conditions · every bridge in Middlesex County · New Jersey bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.