IRR CO RD 87 over Pit River Slough
FairModoc County, California · 0.2 MI NE Lkout Hkmore RD · Structure no. 03C0070
- Built
- 1955
- 70 years old
- Condition
- Fair
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 53 ft
- 3 main spans
- Daily traffic
- 350
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
IRR CO RD 87 over Pit River Slough is a concrete continuous slab carrying IRR CO RD 87 over Pit River Slough in Modoc County, California. It was built in 1955, so it is 70 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 350 vehicles a day, roughly 10% of them trucks, projected to reach 524 by 2041. The structure is 53 ft (16.2 m) long and 29 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 CO RD 87 over Pit River Slough built?
It was built in 1955, making it 70 years old in 2025.
What condition is IRR CO RD 87 over Pit River Slough 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 April 2023.
How much traffic does IRR CO RD 87 over Pit River Slough carry?
About 350 vehicles per day (2012 count), of which roughly 10% are trucks.
How long is IRR CO RD 87 over Pit River Slough?
The structure is 53 ft (16.2 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.
Who owns IRR CO RD 87 over Pit River Slough?
It is owned by the County Highway Agency.