237th Street over Big Sioux River
PoorPosted for loadMoody County, South Dakota · 3.5S & 2.6W of Egan · Structure no. 000000051093170
- Built
- 1976
- 49 years old
- Condition
- Poor
- inspected August 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 180 ft
- 4 main spans
- Daily traffic
- 35
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
237th Street over Big Sioux River is a prestressed concrete tee beam carrying 237th Street over Big Sioux River in Moody County, South Dakota. It was built in 1976, so it is 49 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 3 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. Its operating status is: posted for load restriction.
It carries about 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 180 ft (54.9 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 237th Street over Big Sioux River built?
It was built in 1976, making it 49 years old in 2025.
What condition is 237th Street over Big Sioux River 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 August 2024.
How much traffic does 237th Street over Big Sioux River carry?
About 35 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 237th Street over Big Sioux River?
The structure is 180 ft (54.9 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.
Who owns 237th Street over Big Sioux River?
It is owned by the County Highway Agency.