Interstate 29 over Forest River
FairWalsh County, North Dakota · 7 South Nd 17 · Structure no. 0029168632 R
- Built
- 1971
- 54 years old, rebuilt 1998
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 210 ft
- 3 main spans
- Daily traffic
- 2,300
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 29 over Forest River is a steel continuous stringer/multi-beam or girder carrying Interstate 29 over Forest River in Walsh County, North Dakota. It was built in 1971 and reconstructed in 1998, so it is 54 years old, older than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,300 vehicles a day, roughly 30% of them trucks, projected to reach 2,300 by 2039. The structure is 210 ft (64 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 29 over Forest River built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1998.
What condition is Interstate 29 over Forest River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does Interstate 29 over Forest River carry?
About 2,300 vehicles per day (2019 count), of which roughly 30% are trucks.
How long is Interstate 29 over Forest River?
The structure is 210 ft (64 m) long with a longest span of 81 ft (24.7 m) and a deck 42 ft wide.
Who owns Interstate 29 over Forest River?
It is owned by the State Highway Agency.