Bridge conditions in Warren County, New Jersey
268 inventoried bridges · 12 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
12 of the 268 bridges the federal inventory lists in Warren County are rated poor; the rest split 50 good and 206 fair.
- 12 of the 268 bridges in Warren County, New Jersey, are rated in poor condition (4.5%) in the 2025 National Bridge Inventory, as of .
- 50 bridges (18.7%) are rated good and 206 (76.9%) fair.
- The median Warren County bridge was built in 1953.
- The busiest poor-rated bridge is Nj 31 over Furnace Brook (built 1926), carrying about 12,730 vehicles a day.
Good 18.7% · Fair 76.9% · Poor 4.5% of 268 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nj 31 over Furnace Brook | 1926 | 12,730 | Poor |
| Nj 57 over Mill Brook | 1922 | 11,809 | Poor |
| Nj 57 over Lopatcong Creek Tributar | 1921 | 10,951 | Poor |
| Nj 57 over Lopatcong Creek | 1921 | 10,356 | Poor |
| US 46 over Paulins Kill | 1933 | 9,721 | Poor |
| South Main Street over Washington Scndry (N&S) | 1910 | 9,013 | Poor |
| Route US 46 over Aband. Hudson Br.conrail | 1924 | 8,930 | Poor |
| S Main St (CR 678) over Lopatcong Creek | 1925 | 8,549 | Poor |
| Nj 94 over Jacksonburg Creek | 1931 | 7,984 | Poor |
| Nj 94 over Blair Creek | 1929 | 5,610 | Poor |
| Co Rte 642 High St over Norfolk Southern RR | 1973 | 4,034 | Poor |
| Rymon Road over Musconetcong River | 1868 | 410 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 over Kittatinny Beach Road | 1953 | 74,343 | Fair |
| I-80 over Camp Weygant Road | 1953 | 74,343 | Fair |
| I-80 & Service Rd over Dunnfield Creek | 1953 | 62,106 | Fair |
| I-80 over Pequest River | 1969 | 60,200 | Fair |
| I-80 over Bear Creek | 1967 | 59,709 | Fair |
| I-80 & CR 675 over Stoney Brook | 1953 | 55,570 | Fair |
| I-78 Westbound over Stwrtsvl Rd&pohatcong Ck | 1959 | 54,829 | Fair |
| I-78 EB over Beattys Road | 1959 | 54,800 | Fair |
| I-78 WB over Beattys Road | 1959 | 54,800 | Fair |
| I-78 Eastbound over S. Main St&pohatcong Ck | 1959 | 54,800 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of New Jersey: New Jersey bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.