US Bridges

State Route 4 EB over Alhambra Ave

Fair

Contra Costa County, California · 04-CC-004-R8.55-MTZ · Structure no. 28 0214R

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
172 ft
3 main spans
Daily traffic
31,000
2018 count
Owner
State
State Highway Agency

About this bridge

State Route 4 EB over Alhambra Ave is a concrete continuous box beam or girders - multiple carrying State Route 4 EB over Alhambra Ave in Contra Costa County, California. It was built in 1967, so it is 58 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 31,000 vehicles a day, roughly 7% of them trucks, projected to reach 63,819 by 2042. The structure is 172 ft (52.4 m) long and 38 ft wide.

Location

Open in Google Maps
CarriesState Route 4 EB
CrossesAlhambra Ave
Location04-CC-004-R8.55-MTZ
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates37.99047, -122.13021
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span104 ft (31.7 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,000 (2018)
Projected traffic63,819 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 State Route 4 EB over Alhambra Ave built?

It was built in 1967, making it 58 years old in 2025.

What condition is State Route 4 EB over Alhambra Ave 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 May 2024.

How much traffic does State Route 4 EB over Alhambra Ave carry?

About 31,000 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is State Route 4 EB over Alhambra Ave?

The structure is 172 ft (52.4 m) long with a longest span of 104 ft (31.7 m) and a deck 38 ft wide.

Who owns State Route 4 EB over Alhambra Ave?

It is owned by the State Highway Agency.