Highland Lakes RD over Boulder Creek
GoodShasta County, California · Right of I-5 · Structure no. 06C0349
- Built
- 1928
- 97 years old
- Condition
- Good
- inspected July 2023
- Type
- Arch - Deck
- Concrete
- Length
- 145 ft
- 1 main span
- Daily traffic
- 10
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
Highland Lakes RD over Boulder Creek is a concrete arch - deck carrying Highland Lakes RD over Boulder Creek in Shasta County, California. It was built in 1928, so it is 97 years old, older 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 10 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2042. The structure is 145 ft (44.2 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Highland Lakes RD over Boulder Creek built?
It was built in 1928, making it 97 years old in 2025.
What condition is Highland Lakes RD over Boulder 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 Highland Lakes RD over Boulder Creek carry?
About 10 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is Highland Lakes RD over Boulder Creek?
The structure is 145 ft (44.2 m) long with a longest span of 82 ft (24.9 m) and a deck 27 ft wide.
Who owns Highland Lakes RD over Boulder Creek?
It is owned by the County Highway Agency.