Bridge conditions in Sussex County, New Jersey
172 inventoried bridges · 15 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Sussex County tracks close to typical: 15 of its 172 inventoried bridges (8.7%) are rated poor, against a national rate of about 7%.
- 15 of the 172 bridges in Sussex County, New Jersey, are rated in poor condition (8.7%) in the 2025 National Bridge Inventory, as of .
- 41 bridges (23.8%) are rated good and 116 (67.4%) fair.
- The median Sussex County bridge was built in 1960.
- The busiest poor-rated bridge is US 206 over Br. Pequest River (built 1910), carrying about 19,759 vehicles a day.
Good 23.8% · Fair 67.4% · Poor 8.7% of 172 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 |
|---|---|---|---|
| US 206 over Br. Pequest River | 1910 | 19,759 | Poor |
| Nj 15 over Beaver Run(paulins Kill) | 1915 | 19,298 | Poor |
| US 206 over Big Flat Brook | 1929 | 16,806 | Poor |
| US 206 over Dry Brook | 1940 | 15,621 | Poor |
| US 206 over Little Flat Brook | 1929 | 11,687 | Poor |
| Nj 23 over Mill Brook | 1962 | 6,227 | Poor |
| Blue Heron Rd. over New Jersey 15 | 1973 | 3,455 | Poor |
| CR 622 over Swartswood Creek | 1940 | 3,185 | Poor |
| CR 515 over Wawayanda Creek | 1964 | 886 | Poor |
| Mudtown Road over Clove Brook | 1915 | 700 | Poor |
| CR 521 over Swartswood Creek | 1940 | 691 | Poor |
| CR675 (degroat Rd) over Little Flat Brook | 1942 | 365 | Poor |
| Main Street over Flat Brook | 1889 | 302 | Poor |
| Roy Road over Papakating Creek | 1939 | 208 | Poor |
| Haneys Mill Brdge over Big Flat Brook | 1893 | 33 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 over Musconetcong River | 1972 | 61,525 | Fair |
| I-80 EB over Waterloo Road (CR 604) | 1973 | 39,468 | Fair |
| I-80 WB over Waterloo Road (CR 604) | 1973 | 39,468 | Fair |
| Nj 15 over Ny Susquehanna West.rr | 2003 | 28,918 | Good |
| Nj 23 over Br. Franklin Lake | 1948 | 25,140 | Fair |
| US 206 over Lubbers Run | 2014 | 24,475 | Fair |
| Nj 15 over Wallkill River | 1973 | 23,059 | Good |
| US 206 over Br. Pequest River | 1910 | 19,759 | Poor |
| Nj 23 over Wallkill River | 1949 | 19,472 | Fair |
| Nj 23 over Nys&w RR (abandoned) | 1950 | 19,300 | 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.