US Bridges

Interstate 580 over Altamont Creek Tributary

Good

Alameda County, California · 04-ALA-580-R9.40-LVMR · Structure no. 33 0673

Built
1969
56 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
175,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 580 over Altamont Creek Tributary is a concrete continuous culvert carrying Interstate 580 over Altamont Creek Tributary in Alameda County, California. It was built in 1969, so it is 56 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 175,000 vehicles a day, roughly 8% of them trucks, projected to reach 261,504 by 2046. The structure is 26 ft (7.8 m) long and 352 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesInterstate 580
CrossesAltamont Creek Tributary
Location04-ALA-580-R9.40-LVMR
RouteInterstate 580
Coordinates37.71177, -121.71661
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length26 ft (7.8 m)
Longest span12 ft (3.7 m)
Deck width352 ft (107.3 m)
Roadway width288 ft (87.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175,000 (2020)
Projected traffic261,504 by 2046
Trucks8%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 580 over Altamont Creek Tributary built?

It was built in 1969, making it 56 years old in 2025.

What condition is Interstate 580 over Altamont Creek Tributary 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 Interstate 580 over Altamont Creek Tributary carry?

About 175,000 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Interstate 580 over Altamont Creek Tributary?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m) and a deck 352 ft wide.

Who owns Interstate 580 over Altamont Creek Tributary?

It is owned by the State Highway Agency.