US Bridges

Interstate 580 WB over Alamo Canal

Good

Alameda County, California · 04-ALA-580-20.56-PLE · Structure no. 33 0016R

Built
1952
73 years old, rebuilt 1996
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
151 ft
7 main spans
Daily traffic
102,900
2017 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 WB over Alamo Canal is a concrete continuous slab carrying Interstate 580 WB over Alamo Canal in Alameda County, California. It was built in 1952 and reconstructed in 1996, so it is 73 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 102,900 vehicles a day, roughly 7% of them trucks, projected to reach 153,506 by 2046. The structure is 151 ft (46 m) long and 67 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesInterstate 580 WB
CrossesAlamo Canal
Location04-ALA-580-20.56-PLE
RouteInterstate 580
Coordinates37.70183, -121.91974
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length151 ft (46 m)
Longest span22 ft (6.7 m)
Deck width67 ft (20.3 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102,900 (2017)
Projected traffic153,506 by 2046
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 WB over Alamo Canal built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1996.

What condition is Interstate 580 WB over Alamo Canal 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 February 2024.

How much traffic does Interstate 580 WB over Alamo Canal carry?

About 102,900 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is Interstate 580 WB over Alamo Canal?

The structure is 151 ft (46 m) long with a longest span of 22 ft (6.7 m) and a deck 67 ft wide.

Who owns Interstate 580 WB over Alamo Canal?

It is owned by the State Highway Agency.