Jefferson County Bridge Report Card
Jefferson County scores 82 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Jefferson County, Kansas
Jefferson County has 194 bridges in the National Bridge Inventory, with 7 rated poor and 9 rated scour-critical. Its poor-condition share of 3.6% is at or below the 5.2% statewide average. Poor-condition bridges carry about 556 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Jefferson County a Bridge Condition Exposure Score of 82/100 (B). The county has 194 bridges in the National Bridge Inventory, including 7 in poor condition and 9 rated scour-critical. Poor-condition bridges carry about 556 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 | 3.6% | 7.2 |
| Poor-condition traffic exposure | 25 | 0.5% of measured traffic | 0.4 |
| Scour-critical bridge share | 20 | 4.6% | 9.3 |
| Average age vs national baseline | 10 | 50 years vs 48 nationally | 0.9 |
| Traffic-data completeness | 5 | 114,540 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 | 3.6% |
| State Poor-Condition Share | 5.2% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 4.6% |
| Average Bridge Age | 50 years |
| Poor-Condition Traffic Exposure | 556 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Jefferson County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| 150th over Little Rock Creek | Poor condition + traffic exposure | Poor | 15 | 1977 |
| Ferguson Rd. over Little Rock Creek | Poor condition + traffic exposure | Poor | 430 | 1968 |
| 62nd over Muddy Creek | Poor condition + traffic exposure | Poor | 50 | 1991 |
| Mccall RD over Slough Creek | Poor condition + traffic exposure | Poor | 35 | 1923 |
| Clark Rd. over Muddy Creek | Poor condition + traffic exposure | Poor | 20 | 1968 |
| 206th over Trib Delaware River | Poor condition + traffic exposure | Poor | 5 | 1909 |
| Old County Road over Fish Pond Creek | Poor condition + traffic exposure | Poor | 1 | 1930 |
| K4 HWY over Rock Creek | Scour-critical foundation rating | Fair | 4,785 | 1961 |
| K16 HWY over Cedar Creek | Scour-critical foundation rating | Good | 763 | 1968 |
| Union Rd. over Nine Mile Creek | Scour-critical foundation rating | Fair | 160 | 1953 |
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.