Richland County Bridge Report Card
Richland County scores 79 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Richland County, Montana
Richland County has 97 bridges in the National Bridge Inventory, with 4 rated poor and 3 rated scour-critical. Its poor-condition share of 4.1% is at or below the 7.4% statewide average. Poor-condition bridges carry about 5,805 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Richland County a Bridge Condition Exposure Score of 79/100 (C). The county has 97 bridges in the National Bridge Inventory, including 4 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 5,805 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 | 4.1% | 8.2 |
| Poor-condition traffic exposure | 25 | 8.7% of measured traffic | 6.5 |
| Scour-critical bridge share | 20 | 3.1% | 6.2 |
| Average age vs national baseline | 10 | 37 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 66,754 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 | 4.1% |
| State Poor-Condition Share | 7.4% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 3.1% |
| Average Bridge Age | 37 years |
| Poor-Condition Traffic Exposure | 5,805 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Richland County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| S 23 over Yellowstone River | Poor condition + traffic exposure | Poor | 2,438 | 1994 |
| County Road 001 over Hardscrabble Creek 041 | Poor condition + traffic exposure | Poor | 100 | 1945 |
| S 16 over Crane Creek | Poor condition + traffic exposure | Poor | 2,821 | 1957 |
| S 200 over Drainage | Poor condition + traffic exposure | Poor | 446 | 1956 |
| County Road 213 over Four Mile Creek 062 | Scour-critical foundation rating | Fair | 100 | 1983 |
| S 16-holly ST over Usrs Canal | High traffic | Fair | 5,874 | 1999 |
| S 200 over First Hay Creek | High traffic | Fair | 4,499 | 1986 |
| S 200 over Second Hay Creek | High traffic | Good | 4,499 | 1986 |
| S 16-s Central AVE over Lone Tree Creek | High traffic | Fair | 3,968 | 1974 |
| 14th ST SE over Lone Tree Creek | High traffic | Fair | 3,099 | 1973 |
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.