Branch Mill Road over Tar Spring Creek
GoodSan Luis Obispo County, California · 0.2 MI S of Huasna Road · Structure no. 49C0459
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 107 ft
- 1 main span
- Daily traffic
- 1,240
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
Branch Mill Road over Tar Spring Creek is a prestressed concrete stringer/multi-beam or girder carrying Branch Mill Road over Tar Spring Creek in San Luis Obispo County, California. It was built in 2015, so it is 10 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,240 vehicles a day, roughly 5% of them trucks, projected to reach 1,530 by 2045. The structure is 107 ft (32.7 m) long and 35 ft wide. If it were closed, the detour would be 5.6 mi (9 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Branch Mill Road over Tar Spring Creek built?
It was built in 2015, making it 10 years old in 2025.
What condition is Branch Mill Road over Tar Spring Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.
How much traffic does Branch Mill Road over Tar Spring Creek carry?
About 1,240 vehicles per day (2010 count), of which roughly 5% are trucks.
How long is Branch Mill Road over Tar Spring Creek?
The structure is 107 ft (32.7 m) long with a longest span of 99 ft (30.3 m) and a deck 35 ft wide.
Who owns Branch Mill Road over Tar Spring Creek?
It is owned by the County Highway Agency.