I029 N over Snake Ck
FairLincoln County, South Dakota · 0.4 N US 18 W Interch · Structure no. 000000042065166
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 119 ft
- 3 main spans
- Daily traffic
- 9,870
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I029 N over Snake Ck is a concrete continuous slab carrying I029 N over Snake Ck in Lincoln County, South Dakota. It was built in 1960, 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 9,870 vehicles a day, roughly 26% of them trucks, projected to reach 15,851 by 2044. The structure is 119 ft (36.4 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I029 N over Snake Ck built?
It was built in 1960, making it 65 years old in 2025.
What condition is I029 N over Snake Ck 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 June 2023.
How much traffic does I029 N over Snake Ck carry?
About 9,870 vehicles per day (2024 count), of which roughly 26% are trucks.
How long is I029 N over Snake Ck?
The structure is 119 ft (36.4 m) long with a longest span of 42 ft (12.8 m) and a deck 44 ft wide.
Who owns I029 N over Snake Ck?
It is owned by the State Highway Agency.