Redwood Road over State Route 13
PoorAlameda County, California · 04-ALA-013-5.39-OAK · Structure no. 33 0147
- Built
- 1966
- 59 years old
- Condition
- Poor
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 318 ft
- 4 main spans
- Daily traffic
- 10,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Redwood Road over State Route 13 is a concrete continuous box beam or girders - multiple carrying Redwood Road over State Route 13 in Alameda County, California. It was built in 1966, so it is 59 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 10,000 vehicles a day, roughly 3% of them trucks, projected to reach 14,914 by 2043. The structure is 318 ft (96.9 m) long and 83 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Redwood Road over State Route 13 built?
It was built in 1966, making it 59 years old in 2025.
What condition is Redwood Road over State Route 13 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.
How much traffic does Redwood Road over State Route 13 carry?
About 10,000 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is Redwood Road over State Route 13?
The structure is 318 ft (96.9 m) long with a longest span of 110 ft (33.5 m) and a deck 83 ft wide.
Who owns Redwood Road over State Route 13?
It is owned by the State Highway Agency.