Bridge conditions in Polk County, Nebraska
93 inventoried bridges · 10 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 9 bridges in Polk County is rated in poor condition: 10 of 93 on the federal inventory, one of the higher shares in Nebraska.
- 10 of the 93 bridges in Polk County, Nebraska, are rated in poor condition (10.8%) in the 2025 National Bridge Inventory, as of .
- 54 bridges (58.1%) are rated good and 29 (31.2%) fair.
- The median Polk County bridge was built in 1979.
- The busiest poor-rated bridge is County Highway over N Br Big Blue River (built 1940), carrying about 70 vehicles a day.
Good 58.1% · Fair 31.2% · Poor 10.8% of 93 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 |
|---|---|---|---|
| County Highway over N Br Big Blue River | 1940 | 70 | Poor |
| County Highway over Clear Creek | 1935 | 65 | Poor |
| County Highway over S Ch Platte River | 1920 | 65 | Poor |
| County Highway over N Br Big Blue River | 1950 | 50 | Poor |
| County Highway over N Br Big Blue River | 1950 | 50 | Poor |
| County Highway over Stream | 1983 | 50 | Poor |
| County Highway over N Br Big Blue River | 1950 | 30 | Poor |
| County Highway over N Br Big Blue River | 1935 | 25 | Poor |
| County Road G over N Br Big Blue River | 1935 | 25 | Poor |
| County Highway over Clear Creek | 1935 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US81/N92 over Davis Creek | 2022 | 3,970 | Good |
| US81/N92 over Davis Creek | 2005 | 3,970 | Good |
| US81 over N Br Big Blue River | 1985 | 3,950 | Fair |
| US81 over Prairie Creek | 1985 | 3,950 | Good |
| US81 over Davis Creek | 1985 | 3,385 | Good |
| N92 over Platte River Trib | 1939 | 1,360 | Fair |
| N92 over Clear Creek Trib | 1940 | 1,360 | Good |
| N39 over Stream | 2004 | 1,120 | Good |
| N39 over Clear Creek | 2004 | 1,120 | Good |
| N39 over Platte River | 1970 | 1,120 | Fair |
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.