IRR US018 over Creek
PoorDouglas County, South Dakota · Douglas/Charles Mix CO LN · Structure no. 000000022228179
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected July 2023
- Type
- Slab
- Concrete Continuous
- Length
- 106 ft
- 5 main spans
- Daily traffic
- 556
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR US018 over Creek is a concrete continuous slab carrying IRR US018 over Creek in Douglas County, South Dakota. It was built in 1961, so it is 64 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 556 vehicles a day, roughly 13% of them trucks, projected to reach 768 by 2044. The structure is 106 ft (32.2 m) long and 34 ft wide. If it were closed, the detour would be 21.7 mi (35 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR US018 over Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is IRR US018 over Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.
How much traffic does IRR US018 over Creek carry?
About 556 vehicles per day (2024 count), of which roughly 13% are trucks.
How long is IRR US018 over Creek?
The structure is 106 ft (32.2 m) long with a longest span of 21 ft (6.3 m) and a deck 34 ft wide.
Who owns IRR US018 over Creek?
It is owned by the State Highway Agency.