US Bridges

Interstate 580 over San Lorenzo Creek

Fair

Alameda County, California · 04-ALA-580-R27.16 · Structure no. 33 0234

Built
1957
68 years old, rebuilt 1977
Condition
Fair
inspected March 2024
Type
Arch - Deck
Concrete
Length
40 ft
1 main span
Daily traffic
197,000
2017 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 over San Lorenzo Creek is a concrete arch - deck carrying Interstate 580 over San Lorenzo Creek in Alameda County, California. It was built in 1957 and reconstructed in 1977, so it is 68 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 197,000 vehicles a day, projected to reach 233,108 by 2046. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesInterstate 580
CrossesSan Lorenzo Creek
Location04-ALA-580-R27.16
RouteInterstate 580
CountyAlameda County
StateCalifornia
Coordinates37.70198, -122.03644
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic197,000 (2017)
Projected traffic233,108 by 2046
Trucks0%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 580 over San Lorenzo Creek built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1977.

What condition is Interstate 580 over San Lorenzo Creek 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 Interstate 580 over San Lorenzo Creek carry?

About 197,000 vehicles per day (2017 count).

How long is Interstate 580 over San Lorenzo Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m).

Who owns Interstate 580 over San Lorenzo Creek?

It is owned by the State Highway Agency.