US Bridges

Interstate 680 over Alameda Creek

Fair

Alameda County, California · 04-ALA-680-R10.15 · Structure no. 33 0047

Built
1927
98 years old, rebuilt 1990
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete Continuous
Length
604 ft
15 main spans
Daily traffic
141,000
2018 count
Owner
State
State Highway Agency

About this bridge

Interstate 680 over Alameda Creek is a concrete continuous tee beam carrying Interstate 680 over Alameda Creek in Alameda County, California. It was built in 1927 and reconstructed in 1990, so it is 98 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 141,000 vehicles a day, roughly 8% of them trucks, projected to reach 217,713 by 2042. The structure is 604 ft (184.1 m) long and 132 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesInterstate 680
CrossesAlameda Creek
Location04-ALA-680-R10.15
RouteInterstate 680
Coordinates37.57736, -121.87815
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans15
Design loadH 15
Structure length604 ft (184.1 m)
Longest span43 ft (13.1 m)
Deck width132 ft (40.3 m)
Roadway width126 ft (38.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic141,000 (2018)
Projected traffic217,713 by 2042
Trucks8%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 680 over Alameda Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1990.

What condition is Interstate 680 over Alameda Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Interstate 680 over Alameda Creek carry?

About 141,000 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is Interstate 680 over Alameda Creek?

The structure is 604 ft (184.1 m) long with a longest span of 43 ft (13.1 m) and a deck 132 ft wide.

Who owns Interstate 680 over Alameda Creek?

It is owned by the State Highway Agency.