Middlefield RD over Redwood Creek
GoodSan Mateo County, California · West of Maple ST · Structure no. 35C0169
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected May 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 14,000
- 2016 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Middlefield RD over Redwood Creek is a concrete continuous culvert carrying Middlefield RD over Redwood Creek in San Mateo County, California. It was built in 1989, so it is 36 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 14,000 vehicles a day, roughly 2% of them trucks, projected to reach 17,811 by 2042. The structure is 30 ft (9.1 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Middlefield RD over Redwood Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is Middlefield RD over Redwood 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 2024.
How much traffic does Middlefield RD over Redwood Creek carry?
About 14,000 vehicles per day (2016 count), of which roughly 2% are trucks.
How long is Middlefield RD over Redwood Creek?
The structure is 30 ft (9.1 m) long with a longest span of 13 ft (4 m) and a deck 63 ft wide.
Who owns Middlefield RD over Redwood Creek?
It is owned by the City or Municipal Highway Agency.