Iron Lightening RD over Bear Ck
FairPosted for loadZiebach County, South Dakota · 0.2 S& 1.5 W Red Elm · Structure no. 000000069100288
- Built
- 1954
- 71 years old
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 74 ft
- 3 main spans
- Daily traffic
- 35
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Iron Lightening RD over Bear Ck is a concrete continuous slab carrying Iron Lightening RD over Bear Ck in Ziebach County, South Dakota. It was built in 1954, so it is 71 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. 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 74 ft (22.6 m) long and 28 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Iron Lightening RD over Bear Ck built?
It was built in 1954, making it 71 years old in 2025.
What condition is Iron Lightening RD over Bear 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 July 2024.
How much traffic does Iron Lightening RD over Bear Ck carry?
About 35 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is Iron Lightening RD over Bear Ck?
The structure is 74 ft (22.6 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.
Who owns Iron Lightening RD over Bear Ck?
It is owned by the County Highway Agency.