US Highway 85 over Little Muddy River
PoorWilliams County, North Dakota · 1 South of Nd 50 · Structure no. 0085216118
- Built
- 2016
- 9 years old
- Condition
- Poor
- inspected October 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 217 ft
- 3 main spans
- Daily traffic
- 3,075
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 85 over Little Muddy River is a prestressed concrete box beam or girders - single or spread carrying US Highway 85 over Little Muddy River in Williams County, North Dakota. It was built in 2016, so it is 9 years old, younger than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 3,075 vehicles a day, roughly 49% of them trucks, projected to reach 5,315 by 2039. The structure is 217 ft (66 m) long and 43 ft wide. If it were closed, the detour would be 65.9 mi (106 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 85 over Little Muddy River built?
It was built in 2016, making it 9 years old in 2025.
What condition is US Highway 85 over Little Muddy River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.
How much traffic does US Highway 85 over Little Muddy River carry?
About 3,075 vehicles per day (2019 count), of which roughly 49% are trucks.
How long is US Highway 85 over Little Muddy River?
The structure is 217 ft (66 m) long with a longest span of 73 ft (22.1 m) and a deck 43 ft wide.
Who owns US Highway 85 over Little Muddy River?
It is owned by the State Highway Agency.