Jackson Blvd over I090
GoodLawrence County, South Dakota · Spearfish Interchange · Structure no. 000000041101077
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 273 ft
- 4 main spans
- Daily traffic
- 9,388
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Jackson Blvd over I090 is a prestressed concrete continuous stringer/multi-beam or girder carrying Jackson Blvd over I090 in Lawrence County, South Dakota. It was built in 1971, so it is 54 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 9,388 vehicles a day, roughly 8% of them trucks, projected to reach 5,588 by 2043. The structure is 273 ft (83.3 m) long and 43 ft wide.
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 Jackson Blvd over I090 built?
It was built in 1971, making it 54 years old in 2025.
What condition is Jackson Blvd 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 October 2023.
How much traffic does Jackson Blvd over I090 carry?
About 9,388 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Jackson Blvd over I090?
The structure is 273 ft (83.3 m) long with a longest span of 86 ft (26.2 m) and a deck 43 ft wide.
Who owns Jackson Blvd over I090?
It is owned by the State Highway Agency.