Bridge conditions in Rock County, Nebraska
14 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 14 bridges in Rock County: 8 rated good, 5 fair, and 1 poor.
- 1 of the 14 bridges in Rock County, Nebraska, are rated in poor condition (7.1%) in the 2025 National Bridge Inventory, as of .
- 8 bridges (57.1%) are rated good and 5 (35.7%) fair.
- The median Rock County bridge was built in 1974.
- The busiest poor-rated bridge is Aspen Avenue over Niobrara River (built 1912), carrying about 35 vehicles a day.
Good 57.1% · Fair 35.7% · Poor 7.1% of 14 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 |
|---|---|---|---|
| Aspen Avenue over Niobrara River | 1912 | 35 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US20/US183/N7 over Abandoned RR | 1938 | 2,860 | Good |
| N137 over N Br Elkhorn River | 1973 | 430 | Good |
| N137 over Niobrara River | 1974 | 430 | Good |
| N7 over Niobrara River | 1982 | 395 | Good |
| 889TH Rd over Long Pine Creek | 2020 | 45 | Good |
| 449TH Ave over Laughing Water Creek | 2002 | 45 | Good |
| County Highway over Skull Creek | 1969 | 35 | Fair |
| Aspen Avenue over Niobrara River | 1912 | 35 | Poor |
| Coll 7432 over Elkhorn River | 1935 | 30 | Fair |
| Coll 7432 over Stream | 1976 | 30 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Nebraska: Nebraska 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.