Bridge conditions in Williams County, North Dakota
99 inventoried bridges · 23 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Williams County has 23 bridges rated poor out of 99 inventoried, a 23.2% share that puts it well above the national rate of about 7%.
- 23 of the 99 bridges in Williams County, North Dakota, are rated in poor condition (23.2%) in the 2025 National Bridge Inventory, as of .
- 37 bridges (37.4%) are rated good and 39 (39.4%) fair.
- The median Williams County bridge was built in 1978.
- The busiest poor-rated bridge is County Highway over Little Muddy River (built 1954), carrying about 3,495 vehicles a day.
Good 37.4% · Fair 39.4% · Poor 23.2% of 99 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.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US Highway 2 over 18 th ST W | 2014 | 22,230 | Good |
| US Highway 2 over Creek | 2017 | 21,780 | Good |
| US Highway 2 over Creek | 1955 | 9,520 | Good |
| 11TH St West over Sand Creek | 2015 | 7,110 | Good |
| US Highway 85 over Creek | 2017 | 6,440 | Good |
| US Highway 85 over Camp Creek | 2012 | 6,440 | Good |
| Nd Highway 1804 over Beaver Creek | 2015 | 5,000 | Good |
| US 2 Bus. Loop over Sand Creek | 1960 | 3,600 | Fair |
| County Highway over Little Muddy River | 1954 | 3,495 | Poor |
| US Highway 85 over Little Muddy River | 2016 | 3,075 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Williams County → - all 99, busiest first, each with its own condition record.
All of North Dakota: North Dakota 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.