401 Ave over I090
GoodDavison County, South Dakota · 4.0 E Mt Vernon Interchan · Structure no. 000000018070105
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 254 ft
- 4 main spans
- Daily traffic
- 40
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
401 Ave over I090 is a prestressed concrete continuous stringer/multi-beam or girder carrying 401 Ave over I090 in Davison County, South Dakota. It was built in 1965, so it is 60 years old, older than the South Dakota average of 48.9 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 40 vehicles a day, roughly 3% of them trucks, projected to reach 40 by 2043. The structure is 254 ft (77.4 m) long and 30 ft wide. If it were closed, the detour would be 49.1 mi (79 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 401 Ave over I090 built?
It was built in 1965, making it 60 years old in 2025.
What condition is 401 Ave over I090 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 April 2023.
How much traffic does 401 Ave over I090 carry?
About 40 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is 401 Ave over I090?
The structure is 254 ft (77.4 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.
Who owns 401 Ave over I090?
It is owned by the State Highway Agency.