SH 13B over M.F.Clwater R.;e.Kooskia
PoorPosted for loadIdaho County, Idaho · East Kooskia · Structure no. 000000000010560
- Built
- 1935
- 90 years old
- Condition
- Poor
- inspected April 2024
- Type
- Truss - Thru
- Steel
- Length
- 481 ft
- 3 main spans
- Daily traffic
- 980
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 13B over M.F.Clwater R.;e.Kooskia is a steel truss - thru carrying SH 13B over M.F.Clwater R.;e.Kooskia in Idaho County, Idaho. It was built in 1935, so it is 90 years old, older than the Idaho average of 45.3 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 980 vehicles a day, roughly 23% of them trucks, projected to reach 1,470 by 2042. The structure is 481 ft (146.6 m) long and 21 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 13B over M.F.Clwater R.;e.Kooskia built?
It was built in 1935, making it 90 years old in 2025.
What condition is SH 13B over M.F.Clwater R.;e.Kooskia 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 April 2024.
How much traffic does SH 13B over M.F.Clwater R.;e.Kooskia carry?
About 980 vehicles per day (2023 count), of which roughly 23% are trucks.
How long is SH 13B over M.F.Clwater R.;e.Kooskia?
The structure is 481 ft (146.6 m) long with a longest span of 122 ft (37.2 m) and a deck 21 ft wide.
Who owns SH 13B over M.F.Clwater R.;e.Kooskia?
It is owned by the State Highway Agency.