Mission Blvd over Austin Creek
FairSonoma County, California · 0.5 M North of HWY 12 · Structure no. 20C0175
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 59 ft
- 2 main spans
- Daily traffic
- 11,000
- 2010 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Mission Blvd over Austin Creek is a concrete continuous slab carrying Mission Blvd over Austin Creek in Sonoma County, California. It was built in 1960, so it is 65 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 11,000 vehicles a day, roughly 2% of them trucks, projected to reach 8,150 by 2042. The structure is 59 ft (18 m) long and 77 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 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 | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mission Blvd over Austin Creek built?
It was built in 1960, making it 65 years old in 2025.
What condition is Mission Blvd over Austin 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 August 2024.
How much traffic does Mission Blvd over Austin Creek carry?
About 11,000 vehicles per day (2010 count), of which roughly 2% are trucks.
How long is Mission Blvd over Austin Creek?
The structure is 59 ft (18 m) long with a longest span of 27 ft (8.2 m) and a deck 77 ft wide.
Who owns Mission Blvd over Austin Creek?
It is owned by the City or Municipal Highway Agency.