US Bridges

66th Avenue over Interstate 880 & Ramps

Fair

Alameda County, California · 04-ALA-880-26.61-OAK · Structure no. 33 0435

Built
1968
57 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Concrete
Length
298 ft
1 main span
Daily traffic
15,000
1998 count
Owner
State
State Highway Agency

About this bridge

66th Avenue over Interstate 880 & Ramps is a concrete stringer/multi-beam or girder carrying 66th Avenue over Interstate 880 & Ramps in Alameda County, California. It was built in 1968, so it is 57 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 15,000 vehicles a day, roughly 1% of them trucks, projected to reach 34,316 by 2045. The structure is 298 ft (90.8 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries66th Avenue
CrossesInterstate 880 & Ramps
Location04-ALA-880-26.61-OAK
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.7537, -122.20841
Functional classUrban Local

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.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length298 ft (90.8 m)
Longest span136 ft (41.5 m)
Deck width65 ft (19.8 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (1998)
Projected traffic34,316 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 66th Avenue over Interstate 880 & Ramps built?

It was built in 1968, making it 57 years old in 2025.

What condition is 66th Avenue over Interstate 880 & Ramps 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 January 2025.

How much traffic does 66th Avenue over Interstate 880 & Ramps carry?

About 15,000 vehicles per day (1998 count), of which roughly 1% are trucks.

How long is 66th Avenue over Interstate 880 & Ramps?

The structure is 298 ft (90.8 m) long with a longest span of 136 ft (41.5 m) and a deck 65 ft wide.

Who owns 66th Avenue over Interstate 880 & Ramps?

It is owned by the State Highway Agency.