IRR D3676 over Blackbird Creek
PoorPosted for loadOsage County, Oklahoma · 2S&.75W of Jct. 99&20 · Structure no. 089900000000000
- Built
- 1940
- 85 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 41 ft
- 1 main span
- Daily traffic
- 300
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
IRR D3676 over Blackbird Creek is a steel stringer/multi-beam or girder carrying IRR D3676 over Blackbird Creek in Osage County, Oklahoma. It was built in 1940, so it is 85 years old, older than the Oklahoma average of 47.8 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 300 vehicles a day, roughly 10% of them trucks, projected to reach 480 by 2042. The structure is 41 ft (12.4 m) long and 26 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 | 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 IRR D3676 over Blackbird Creek built?
It was built in 1940, making it 85 years old in 2025.
What condition is IRR D3676 over Blackbird Creek 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 March 2024.
How much traffic does IRR D3676 over Blackbird Creek carry?
About 300 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is IRR D3676 over Blackbird Creek?
The structure is 41 ft (12.4 m) long with a longest span of 37 ft (11.3 m) and a deck 26 ft wide.
Who owns IRR D3676 over Blackbird Creek?
It is owned by the County Highway Agency.