221st Street over Trib. to Big Sioux River
PoorMoody County, South Dakota · 10.4W & 2N of Ward · Structure no. 000000051106010
- Built
- 1915
- 110 years old
- Condition
- Poor
- inspected July 2024
- Type
- Arch - Deck
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 69
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
221st Street over Trib. to Big Sioux River is a concrete arch - deck carrying 221st Street over Trib. to Big Sioux River in Moody County, South Dakota. It was built in 1915, so it is 110 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.
It carries about 69 vehicles a day, roughly 2% of them trucks, projected to reach 69 by 2032. The structure is 30 ft (9.1 m) long and 15 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 221st Street over Trib. to Big Sioux River built?
It was built in 1915, making it 110 years old in 2025.
What condition is 221st Street over Trib. to 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 July 2024.
How much traffic does 221st Street over Trib. to Big Sioux River carry?
About 69 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 221st Street over Trib. to Big Sioux River?
The structure is 30 ft (9.1 m) long with a longest span of 24 ft (7.3 m) and a deck 15 ft wide.
Who owns 221st Street over Trib. to Big Sioux River?
It is owned by the County Highway Agency.