Johnson County Bridge Report Card
Johnson County scores 36 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Johnson County, Nebraska
Johnson County has 173 bridges in the National Bridge Inventory, with 41 rated poor and 34 rated scour-critical. Its poor-condition share of 23.7% is above the 7.5% statewide average. Poor-condition bridges carry about 1,695 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Johnson County a Bridge Condition Exposure Score of 36/100 (F). The county has 173 bridges in the National Bridge Inventory, including 41 in poor condition and 34 rated scour-critical. Poor-condition bridges carry about 1,695 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 23.7% | 40.0 |
| Poor-condition traffic exposure | 25 | 3.2% of measured traffic | 2.4 |
| Scour-critical bridge share | 20 | 19.7% | 20.0 |
| Average age vs national baseline | 10 | 53 years vs 48 nationally | 1.9 |
| Traffic-data completeness | 5 | 53,440 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 23.7% |
| State Poor-Condition Share | 7.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 19.7% |
| Average Bridge Age | 53 years |
| Poor-Condition Traffic Exposure | 1,695 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Johnson County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| County Highway over Badger Branch | Poor condition + traffic exposure | Poor | 70 | 1935 |
| 607 AVE over Yankee Creek | Poor condition + traffic exposure | Poor | 60 | 1935 |
| County Highway over Yankee Creek | Poor condition + traffic exposure | Poor | 50 | 1915 |
| County Highway over Stream | Poor condition + traffic exposure | Poor | 45 | 1935 |
| 611 AVE over Lost Branch | Poor condition + traffic exposure | Poor | 40 | 1935 |
| Coll 7888 over Stream | Poor condition + traffic exposure | Poor | 40 | 1935 |
| County Highway over Stream | Poor condition + traffic exposure | Poor | 40 | 1935 |
| County Highway over Stream | Poor condition + traffic exposure | Poor | 35 | 1935 |
| County Highway over Sanders Creek | Poor condition + traffic exposure | Poor | 35 | 1940 |
| County Highway over Stream | Poor condition + traffic exposure | Poor | 25 | 1935 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.