Hahn RD over South Branch Sand Creek
FairColusa County, California · 2.1 MI E of Old 99 · Structure no. 15C0077
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected October 2023
- Type
- Slab
- Concrete Continuous
- Length
- 39 ft
- 2 main spans
- Daily traffic
- 1,541
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Hahn RD over South Branch Sand Creek is a concrete continuous slab carrying Hahn RD over South Branch Sand Creek in Colusa County, California. It was built in 1969, so it is 56 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 5 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 1,541 vehicles a day, roughly 10% of them trucks, projected to reach 1,924 by 2042. The structure is 39 ft (11.9 m) long and 41 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Hahn RD over South Branch Sand Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is Hahn RD over South Branch Sand Creek 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 October 2023.
How much traffic does Hahn RD over South Branch Sand Creek carry?
About 1,541 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is Hahn RD over South Branch Sand Creek?
The structure is 39 ft (11.9 m) long with a longest span of 18 ft (5.5 m) and a deck 41 ft wide.
Who owns Hahn RD over South Branch Sand Creek?
It is owned by the County Highway Agency.