US Bridges

Boston Ave over Interstate 580

Good

Alameda County, California · 04-ALA-580-R41.33-OAK · Structure no. 33 0323

Built
1963
62 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
194 ft
4 main spans
Daily traffic
2,400
2014 count
Owner
State
State Highway Agency

About this bridge

Boston Ave over Interstate 580 is a concrete continuous box beam or girders - multiple carrying Boston Ave over Interstate 580 in Alameda County, California. It was built in 1963, so it is 62 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 2,400 vehicles a day, roughly 3% of them trucks, projected to reach 3,207 by 2041. The structure is 194 ft (59.2 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBoston Ave
CrossesInterstate 580
Location04-ALA-580-R41.33-OAK
RouteCity Street 0
Coordinates37.79719, -122.21365
Functional classUrban Local

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 inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating38.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length194 ft (59.2 m)
Longest span71 ft (21.5 m)
Deck width46 ft (14 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2014)
Projected traffic3,207 by 2041
Trucks3%
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 Boston Ave over Interstate 580 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Boston Ave over Interstate 580 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 September 2023.

How much traffic does Boston Ave over Interstate 580 carry?

About 2,400 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is Boston Ave over Interstate 580?

The structure is 194 ft (59.2 m) long with a longest span of 71 ft (21.5 m) and a deck 46 ft wide.

Who owns Boston Ave over Interstate 580?

It is owned by the State Highway Agency.