Interstate 29 over South Branch Elm River
FairTraill County, North Dakota · 1 North of Grandin · Structure no. 0029092672 R
- Built
- 1970
- 55 years old, rebuilt 1983
- Condition
- Fair
- inspected April 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 170 ft
- 3 main spans
- Daily traffic
- 4,350
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 29 over South Branch Elm River is a prestressed concrete continuous box beam or girders - single or spread carrying Interstate 29 over South Branch Elm River in Traill County, North Dakota. It was built in 1970 and reconstructed in 1983, so it is 55 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 6 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 4,350 vehicles a day, roughly 19% of them trucks, projected to reach 4,350 by 2039. The structure is 170 ft (51.8 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 29 over South Branch Elm River built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1983.
What condition is Interstate 29 over South Branch Elm 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 April 2024.
How much traffic does Interstate 29 over South Branch Elm River carry?
About 4,350 vehicles per day (2019 count), of which roughly 19% are trucks.
How long is Interstate 29 over South Branch Elm River?
The structure is 170 ft (51.8 m) long with a longest span of 62 ft (18.9 m) and a deck 42 ft wide.
Who owns Interstate 29 over South Branch Elm River?
It is owned by the State Highway Agency.