Williams County Bridge Report Card
Williams County scores 51 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Williams County, North Dakota
Williams County has 99 bridges in the National Bridge Inventory, with 23 rated poor and 2 rated scour-critical. Its poor-condition share of 23.2% is above the 11.1% statewide average. Poor-condition bridges carry about 7,284 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Williams County a Bridge Condition Exposure Score of 51/100 (F). The county has 99 bridges in the National Bridge Inventory, including 23 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 7,284 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 | 23.2% | 40.0 |
| Poor-condition traffic exposure | 25 | 5.1% of measured traffic | 3.8 |
| Scour-critical bridge share | 20 | 2.0% | 4.0 |
| Average age vs national baseline | 10 | 52 years vs 48 nationally | 1.6 |
| Traffic-data completeness | 5 | 143,681 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 | 23.2% |
| State Poor-Condition Share | 11.1% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.0% |
| Average Bridge Age | 52 years |
| Poor-Condition Traffic Exposure | 7,284 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Williams County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| County Highway over Little Muddy River | Poor condition + traffic exposure | Poor | 20 | 1914 |
| County Highway over Little Muddy River | Poor condition + traffic exposure | Poor | 3,495 | 1954 |
| US Highway 85 over Little Muddy River | Poor condition + traffic exposure | Poor | 3,075 | 2016 |
| County Highway over Cottonwood Creek | Poor condition + traffic exposure | Poor | 205 | 1963 |
| County Highway over Willow Creek | Poor condition + traffic exposure | Poor | 50 | 1955 |
| County Highway over Painted Woods Creek | Poor condition + traffic exposure | Poor | 50 | 1959 |
| County Highway over Ottertail Creek | Poor condition + traffic exposure | Poor | 25 | 1933 |
| County Highway over Blacktail Creek | Poor condition + traffic exposure | Poor | 25 | 1935 |
| County Highway over Sand Creek | Poor condition + traffic exposure | Poor | 25 | 1939 |
| County Highway over Creek | Poor condition + traffic exposure | Poor | 24 | 1920 |
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.