State Route 84 over Arroyo De LA Laguna
GoodAlameda County, California · 04-ALA-084-17.22 · Structure no. 33 0043
- Built
- 1939
- 86 years old
- Condition
- Good
- inspected August 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 310 ft
- 6 main spans
- Daily traffic
- 13,500
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 84 over Arroyo De LA Laguna is a concrete continuous tee beam carrying State Route 84 over Arroyo De LA Laguna in Alameda County, California. It was built in 1939, so it is 86 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 13,500 vehicles a day, roughly 10% of them trucks, projected to reach 32,280 by 2043. The structure is 310 ft (94.5 m) long and 38 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 84 over Arroyo De LA Laguna built?
It was built in 1939, making it 86 years old in 2025.
What condition is State Route 84 over Arroyo De LA Laguna 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 August 2023.
How much traffic does State Route 84 over Arroyo De LA Laguna carry?
About 13,500 vehicles per day (2010 count), of which roughly 10% are trucks.
How long is State Route 84 over Arroyo De LA Laguna?
The structure is 310 ft (94.5 m) long with a longest span of 82 ft (25 m) and a deck 38 ft wide.
Who owns State Route 84 over Arroyo De LA Laguna?
It is owned by the State Highway Agency.