209 ST over I029
FairBrookings County, South Dakota · 2 N US14 by Pass · Structure no. 000000006185130
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 283 ft
- 2 main spans
- Daily traffic
- 325
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
209 ST over I029 is a steel continuous stringer/multi-beam or girder carrying 209 ST over I029 in Brookings County, South Dakota. It was built in 1970, so it is 55 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 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 325 vehicles a day, roughly 3% of them trucks, projected to reach 325 by 2043. The structure is 283 ft (86.3 m) long and 35 ft wide.
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 209 ST over I029 built?
It was built in 1970, making it 55 years old in 2025.
What condition is 209 ST over I029 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 July 2023.
How much traffic does 209 ST over I029 carry?
About 325 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is 209 ST over I029?
The structure is 283 ft (86.3 m) long with a longest span of 105 ft (32 m) and a deck 35 ft wide.
Who owns 209 ST over I029?
It is owned by the State Highway Agency.