US Bridges

Deer Valley Road over Contra Costa Canal

Good

Contra Costa County, California · 1 Mi. S. of HWY 4 · Structure no. 28C0500

Built
1988
37 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
1,000
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Deer Valley Road over Contra Costa Canal is a prestressed concrete slab carrying Deer Valley Road over Contra Costa Canal in Contra Costa County, California. It was built in 1988, so it is 37 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 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,571 by 2047. The structure is 49 ft (15 m) long and 100 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesDeer Valley Road
CrossesContra Costa Canal
Location1 Mi. S. of HWY 4
RouteCity Street 0
Coordinates37.98472, -121.78535
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 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable 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 (15 m)
Longest span47 ft (14.2 m)
Deck width100 ft (30.4 m)
Roadway width64 ft (19.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2016)
Projected traffic1,571 by 2047
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Deer Valley Road over Contra Costa Canal built?

It was built in 1988, making it 37 years old in 2025.

What condition is Deer Valley Road 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 Deer Valley Road over Contra Costa Canal carry?

About 1,000 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Deer Valley Road over Contra Costa Canal?

The structure is 49 ft (15 m) long with a longest span of 47 ft (14.2 m) and a deck 100 ft wide.

Who owns Deer Valley Road over Contra Costa Canal?

It is owned by the City or Municipal Highway Agency.