Kings Mountain RD over West Union Creek
GoodSan Mateo County, California · 0.05 MI E Tripp RD · Structure no. 35C0123
- Built
- 1905
- 120 years old
- Condition
- Good
- inspected May 2023
- Type
- Arch - Deck
- Concrete
- Length
- 25 ft
- 1 main span
- Daily traffic
- 2,075
- 2015 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Kings Mountain RD over West Union Creek is a concrete arch - deck carrying Kings Mountain RD over West Union Creek in San Mateo County, California. It was built in 1905, so it is 120 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 2,075 vehicles a day, roughly 1% of them trucks, projected to reach 3,154 by 2040. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Kings Mountain RD over West Union Creek built?
It was built in 1905, making it 120 years old in 2025.
What condition is Kings Mountain RD over West Union 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 May 2023.
How much traffic does Kings Mountain RD over West Union Creek carry?
About 2,075 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is Kings Mountain RD over West Union Creek?
The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 22 ft wide.
Who owns Kings Mountain RD over West Union Creek?
It is owned by the City or Municipal Highway Agency.