US Bridges

I 580 EB over Scofield Avenue

Fair

Contra Costa County, California · 04-CC-580-5.83-RCH · Structure no. 28 0140L

Built
1956
69 years old, rebuilt 1988
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
647 ft
11 main spans
Daily traffic
34,000
2009 count
Owner
State
State Highway Agency

About this bridge

I 580 EB over Scofield Avenue is a steel continuous stringer/multi-beam or girder carrying I 580 EB over Scofield Avenue in Contra Costa County, California. It was built in 1956 and reconstructed in 1988, so it is 69 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 6 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 34,000 vehicles a day, roughly 5% of them trucks, projected to reach 60,614 by 2046. The structure is 647 ft (197.3 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI 580 EB
CrossesScofield Avenue
Location04-CC-580-5.83-RCH
RouteInterstate 580
CountyContra Costa County
StateCalifornia
Coordinates37.93234, -122.39798
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating32.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length647 ft (197.3 m)
Longest span70 ft (21.3 m)
Deck width51 ft (15.4 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,000 (2009)
Projected traffic60,614 by 2046
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 580 EB over Scofield Avenue built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1988.

What condition is I 580 EB over Scofield Avenue 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 March 2024.

How much traffic does I 580 EB over Scofield Avenue carry?

About 34,000 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is I 580 EB over Scofield Avenue?

The structure is 647 ft (197.3 m) long with a longest span of 70 ft (21.3 m) and a deck 51 ft wide.

Who owns I 580 EB over Scofield Avenue?

It is owned by the State Highway Agency.