US Bridges

Route 580 EB over Grant Line Road

Good

Alameda County, California · 04-ALA-580-R1.48 · Structure no. 33 0196L

Built
1953
72 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
138 ft
3 main spans
Daily traffic
87,500
2020 count
Owner
State
State Highway Agency

About this bridge

Route 580 EB over Grant Line Road is a concrete continuous slab carrying Route 580 EB over Grant Line Road in Alameda County, California. It was built in 1953, so it is 72 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 87,500 vehicles a day, roughly 13% of them trucks, projected to reach 115,476 by 2044. The structure is 138 ft (42 m) long and 80 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRoute 580 EB
CrossesGrant Line Road
Location04-ALA-580-R1.48
RouteInterstate 580
Coordinates37.74043, -121.58559
Functional classRural 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.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating49.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length138 ft (42 m)
Longest span45 ft (13.7 m)
Deck width80 ft (24.3 m)
Roadway width78 ft (23.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87,500 (2020)
Projected traffic115,476 by 2044
Trucks13%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 580 EB over Grant Line Road built?

It was built in 1953, making it 72 years old in 2025.

What condition is Route 580 EB over Grant Line Road 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 January 2024.

How much traffic does Route 580 EB over Grant Line Road carry?

About 87,500 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Route 580 EB over Grant Line Road?

The structure is 138 ft (42 m) long with a longest span of 45 ft (13.7 m) and a deck 80 ft wide.

Who owns Route 580 EB over Grant Line Road?

It is owned by the State Highway Agency.