CR A21 / Mooney RD over Robbers Creek
PoorLassen County, California · 0.5 MI SW of SR 36 · Structure no. 07C0091
- Built
- 1975
- 50 years old
- Condition
- Poor
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 41 ft
- 4 main spans
- Daily traffic
- 1,500
- 1989 count
- Owner
- County
- County Highway Agency
About this bridge
CR A21 / Mooney RD over Robbers Creek is a wood or timber stringer/multi-beam or girder carrying CR A21 / Mooney RD over Robbers Creek in Lassen County, California. It was built in 1975, so it is 50 years old, younger than the California average of 54.8 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.
It carries about 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 2,071 by 2041. The structure is 41 ft (12.5 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 CR A21 / Mooney RD over Robbers Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is CR A21 / Mooney RD over Robbers 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 August 2023.
How much traffic does CR A21 / Mooney RD over Robbers Creek carry?
About 1,500 vehicles per day (1989 count), of which roughly 5% are trucks.
How long is CR A21 / Mooney RD over Robbers Creek?
The structure is 41 ft (12.5 m) long with a longest span of 9 ft (2.7 m) and a deck 30 ft wide.
Who owns CR A21 / Mooney RD over Robbers Creek?
It is owned by the County Highway Agency.