Interstate 29 over 9th Ave South Separation
GoodCass County, North Dakota · 1.4 North of I-94 - Fargo · Structure no. 0029064555 R
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected August 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 175 ft
- 3 main spans
- Daily traffic
- 21,065
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 29 over 9th Ave South Separation is a prestressed concrete continuous box beam or girders - single or spread carrying Interstate 29 over 9th Ave South Separation in Cass County, North Dakota. It was built in 2001, so it is 24 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 21,065 vehicles a day, roughly 9% of them trucks, projected to reach 34,735 by 2039. The structure is 175 ft (53.3 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 29 over 9th Ave South Separation built?
It was built in 2001, making it 24 years old in 2025.
What condition is Interstate 29 over 9th Ave South Separation in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.
How much traffic does Interstate 29 over 9th Ave South Separation carry?
About 21,065 vehicles per day (2019 count), of which roughly 9% are trucks.
How long is Interstate 29 over 9th Ave South Separation?
The structure is 175 ft (53.3 m) long with a longest span of 70 ft (21.3 m) and a deck 67 ft wide.
Who owns Interstate 29 over 9th Ave South Separation?
It is owned by the State Highway Agency.