US Bridges

Interstate 880 over 29 TH Avenue

Good

Alameda County, California · 04-ALA-880-28.69 · Structure no. 33 0752S

Built
2020
5 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
152 ft
2 main spans
Daily traffic
11,300
1998 count
Owner
State
State Highway Agency

About this bridge

Interstate 880 over 29 TH Avenue is a concrete continuous box beam or girders - multiple carrying Interstate 880 over 29 TH Avenue in Alameda County, California. It was built in 2020, so it is 5 years old, younger 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 11,300 vehicles a day, roughly 2% of them trucks, projected to reach 12,784 by 2043. The structure is 152 ft (46.4 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 880
Crosses29 TH Avenue
Location04-ALA-880-28.69
RouteState Highway 880
Coordinates37.77497, -122.23226
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 inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length152 ft (46.4 m)
Longest span76 ft (23.1 m)
Deck width51 ft (15.5 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,300 (1998)
Projected traffic12,784 by 2043
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 880 over 29 TH Avenue built?

It was built in 2020, making it 5 years old in 2025.

What condition is Interstate 880 over 29 TH Avenue 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 February 2025.

How much traffic does Interstate 880 over 29 TH Avenue carry?

About 11,300 vehicles per day (1998 count), of which roughly 2% are trucks.

How long is Interstate 880 over 29 TH Avenue?

The structure is 152 ft (46.4 m) long with a longest span of 76 ft (23.1 m) and a deck 51 ft wide.

Who owns Interstate 880 over 29 TH Avenue?

It is owned by the State Highway Agency.