Cummings Skyway over Interstate 80
FairContra Costa County, California · 04-CC-080-12.75 · Structure no. 28 0149
- Built
- 1958
- 67 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 288 ft
- 4 main spans
- Daily traffic
- 8,200
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Cummings Skyway over Interstate 80 is a steel stringer/multi-beam or girder carrying Cummings Skyway over Interstate 80 in Contra Costa County, California. It was built in 1958, so it is 67 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 8,200 vehicles a day, roughly 1% of them trucks, projected to reach 21,377 by 2041. The structure is 288 ft (87.9 m) long and 37 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Cummings Skyway over Interstate 80 built?
It was built in 1958, making it 67 years old in 2025.
What condition is Cummings Skyway over Interstate 80 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.
How much traffic does Cummings Skyway over Interstate 80 carry?
About 8,200 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Cummings Skyway over Interstate 80?
The structure is 288 ft (87.9 m) long with a longest span of 87 ft (26.5 m) and a deck 37 ft wide.
Who owns Cummings Skyway over Interstate 80?
It is owned by the State Highway Agency.