US Bridges

Empire Ave over Contra Costa Canal

Good

Contra Costa County, California · 0.01 MI N Laurel RD · Structure no. 28C0209

Built
1994
31 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
14,901
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Empire Ave over Contra Costa Canal is a prestressed concrete slab carrying Empire Ave over Contra Costa Canal in Contra Costa County, California. It was built in 1994, so it is 31 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 14,901 vehicles a day, roughly 15% of them trucks, projected to reach 13,198 by 2047. The structure is 49 ft (14.8 m) long and 96 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesEmpire Ave
CrossesContra Costa Canal
Location0.01 MI N Laurel RD
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates37.98333, -121.73231
Functional classUrban Minor Arterial

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length49 ft (14.8 m)
Longest span49 ft (14.8 m)
Deck width96 ft (29.3 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,901 (2020)
Projected traffic13,198 by 2047
Trucks15%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Empire Ave over Contra Costa Canal built?

It was built in 1994, making it 31 years old in 2025.

What condition is Empire Ave over Contra Costa Canal 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 January 2025.

How much traffic does Empire Ave over Contra Costa Canal carry?

About 14,901 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Empire Ave over Contra Costa Canal?

The structure is 49 ft (14.8 m) long with a longest span of 49 ft (14.8 m) and a deck 96 ft wide.

Who owns Empire Ave over Contra Costa Canal?

It is owned by the City or Municipal Highway Agency.