US018 over I029
FairLincoln County, South Dakota · US 18 W Interchange · Structure no. 000000042065170
- Built
- 1960
- 65 years old, rebuilt 2000
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 252 ft
- 4 main spans
- Daily traffic
- 1,836
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US018 over I029 is a steel continuous stringer/multi-beam or girder carrying US018 over I029 in Lincoln County, South Dakota. It was built in 1960 and reconstructed in 2000, so it is 65 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 1,836 vehicles a day, roughly 13% of them trucks, projected to reach 3,072 by 2044. The structure is 252 ft (76.9 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 US018 over I029 built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2000.
What condition is US018 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 November 2024.
How much traffic does US018 over I029 carry?
About 1,836 vehicles per day (2024 count), of which roughly 13% are trucks.
How long is US018 over I029?
The structure is 252 ft (76.9 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.
Who owns US018 over I029?
It is owned by the State Highway Agency.