US Bridges

W580-680 Connector over Alamo Canal

Good

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

Built
1965
60 years old, rebuilt 1991
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
173 ft
8 main spans
Daily traffic
42,200
2012 count
Owner
State
State Highway Agency

About this bridge

W580-680 Connector over Alamo Canal is a concrete continuous slab carrying W580-680 Connector over Alamo Canal in Alameda County, California. It was built in 1965 and reconstructed in 1991, so it is 60 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 42,200 vehicles a day, roughly 11% of them trucks, projected to reach 43,039 by 2042. The structure is 173 ft (52.7 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesW580-680 Connector
CrossesAlamo Canal
Location04-ALA-580-20.56-PLE
RouteInterstate 580
Coordinates37.70196, -121.91968
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length173 ft (52.7 m)
Longest span22 ft (6.7 m)
Deck width44 ft (13.3 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,200 (2012)
Projected traffic43,039 by 2042
Trucks11%
Lanes on structure2
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 W580-680 Connector over Alamo Canal built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1991.

What condition is W580-680 Connector 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 W580-680 Connector over Alamo Canal carry?

About 42,200 vehicles per day (2012 count), of which roughly 11% are trucks.

How long is W580-680 Connector over Alamo Canal?

The structure is 173 ft (52.7 m) long with a longest span of 22 ft (6.7 m) and a deck 44 ft wide.

Who owns W580-680 Connector over Alamo Canal?

It is owned by the State Highway Agency.