48050 311th ST over East Union Ck
PoorPosted for loadUnion County, South Dakota · 9.5S & 1.5E Alcester · Structure no. 000000064105140
- Built
- 1950
- 75 years old, rebuilt 1975
- Condition
- Poor
- inspected July 2024
- Type
- Channel Beam
- Concrete
- Length
- 51 ft
- 2 main spans
- Daily traffic
- 110
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
48050 311th ST over East Union Ck is a concrete channel beam carrying 48050 311th ST over East Union Ck in Union County, South Dakota. It was built in 1950 and reconstructed in 1975, so it is 75 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. Its operating status is: posted for load restriction.
It carries about 110 vehicles a day, roughly 2% of them trucks, projected to reach 110 by 2032. The structure is 51 ft (15.4 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 48050 311th ST over East Union Ck built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1975.
What condition is 48050 311th ST over East Union Ck 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 48050 311th ST over East Union Ck carry?
About 110 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 48050 311th ST over East Union Ck?
The structure is 51 ft (15.4 m) long with a longest span of 25 ft (7.5 m) and a deck 25 ft wide.
Who owns 48050 311th ST over East Union Ck?
It is owned by the County Highway Agency.