Roy Street over Grizzly Bear Ck
PoorPosted for loadPennington County, South Dakota · Roy ST - Keystone · Structure no. 000000052318435
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 31 ft
- 1 main span
- Daily traffic
- 200
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Roy Street over Grizzly Bear Ck is a steel stringer/multi-beam or girder carrying Roy Street over Grizzly Bear Ck in Pennington County, South Dakota. It was built in 1955, so it is 70 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 200 by 2032. The structure is 31 ft (9.4 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Roy Street over Grizzly Bear Ck built?
It was built in 1955, making it 70 years old in 2025.
What condition is Roy Street over Grizzly Bear 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 Roy Street over Grizzly Bear Ck carry?
About 200 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is Roy Street over Grizzly Bear Ck?
The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 18 ft wide.
Who owns Roy Street over Grizzly Bear Ck?
It is owned by the Town or Township Highway Agency.