US Bridges

Oak Knoll Blvd over Interstate 580

Fair

Alameda County, California · 04-ALA-580-R36.76-OAK · Structure no. 33 0353

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
310 ft
4 main spans
Daily traffic
3,800
2014 count
Owner
State
State Highway Agency

About this bridge

Oak Knoll Blvd over Interstate 580 is a concrete continuous box beam or girders - multiple carrying Oak Knoll Blvd over Interstate 580 in Alameda County, California. It was built in 1965, so it is 60 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 3,800 vehicles a day, roughly 1% of them trucks, projected to reach 5,380 by 2041. The structure is 310 ft (94.5 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesOak Knoll Blvd
CrossesInterstate 580
Location04-ALA-580-R36.76-OAK
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.7586, -122.14828
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4 (+1 approach)
Design loadHS 20
Structure length310 ft (94.5 m)
Longest span76 ft (23.2 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2014)
Projected traffic5,380 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 Oak Knoll Blvd over Interstate 580 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Oak Knoll Blvd over Interstate 580 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 September 2023.

How much traffic does Oak Knoll Blvd over Interstate 580 carry?

About 3,800 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Oak Knoll Blvd over Interstate 580?

The structure is 310 ft (94.5 m) long with a longest span of 76 ft (23.2 m) and a deck 40 ft wide.

Who owns Oak Knoll Blvd over Interstate 580?

It is owned by the State Highway Agency.