County Highway over Little Muddy River
Williams County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Highway over Little Muddy River in Williams County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2015, making it 10 years old at the 2025 inventory.
- It carries about 250 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 37 of the 99 inventoried bridges in Williams County rated good (37.4%); 23 (23.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (48.28457, -103.5736)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 9 | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 167 ft |
| Location | 3 East 8 North Williston |
| NBI structure number | 000000053123240 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Williams 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 |
All bridges nearby: Williams County, ND bridge conditions · every bridge in Williams County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.