COLISEUM-N880 Onrp over Damon Slough
GoodAlameda County, California · 04-ALA-880-26.53-OAK · Structure no. 33 0142S
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 171 ft
- 7 main spans
- Daily traffic
- 1,250
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
COLISEUM-N880 Onrp over Damon Slough is a concrete continuous slab carrying COLISEUM-N880 Onrp over Damon Slough in Alameda County, California. It was built in 1968, so it is 57 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 1,250 vehicles a day, roughly 10% of them trucks, projected to reach 4,236 by 2043. The structure is 171 ft (52.1 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 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 COLISEUM-N880 Onrp over Damon Slough built?
It was built in 1968, making it 57 years old in 2025.
What condition is COLISEUM-N880 Onrp over Damon Slough 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 January 2025.
How much traffic does COLISEUM-N880 Onrp over Damon Slough carry?
About 1,250 vehicles per day (1998 count), of which roughly 10% are trucks.
How long is COLISEUM-N880 Onrp over Damon Slough?
The structure is 171 ft (52.1 m) long with a longest span of 26 ft (7.9 m) and a deck 34 ft wide.
Who owns COLISEUM-N880 Onrp over Damon Slough?
It is owned by the State Highway Agency.