US Bridges

EB 580 Off-Ramp over Alamo Canal

Good

Alameda County, California · 04-ALA-580-20.56-PLE · Structure no. 33 0642K

Built
2002
23 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
156 ft
4 main spans
Daily traffic
10,000
2014 count
Owner
State
State Highway Agency

About this bridge

EB 580 Off-Ramp over Alamo Canal is a concrete continuous slab carrying EB 580 Off-Ramp over Alamo Canal in Alameda County, California. It was built in 2002, so it is 23 years old, younger 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 10,000 vehicles a day, roughly 3% of them trucks, projected to reach 14,310 by 2044. The structure is 156 ft (47.5 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesEB 580 Off-Ramp
CrossesAlamo Canal
Location04-ALA-580-20.56-PLE
RouteInterstate 580
Coordinates37.70135, -121.91936
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection8 Very GoodNo problems noted.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length156 ft (47.5 m)
Longest span44 ft (13.4 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2014)
Projected traffic14,310 by 2044
Trucks3%
Lanes on structure1
Traffic directionOne-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 EB 580 Off-Ramp over Alamo Canal built?

It was built in 2002, making it 23 years old in 2025.

What condition is EB 580 Off-Ramp 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 EB 580 Off-Ramp over Alamo Canal carry?

About 10,000 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is EB 580 Off-Ramp over Alamo Canal?

The structure is 156 ft (47.5 m) long with a longest span of 44 ft (13.4 m) and a deck 28 ft wide.

Who owns EB 580 Off-Ramp over Alamo Canal?

It is owned by the State Highway Agency.