US Bridges

W. Cypress RD over Contra Costa Canal

Good

Contra Costa County, California · 0.06 MI W Rose Ave · Structure no. 28C0206

Built
1938
87 years old
Condition
Good
inspected January 2025
Type
Tee Beam
Concrete
Length
42 ft
1 main span
Daily traffic
6,167
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

W. Cypress RD over Contra Costa Canal is a concrete tee beam carrying W. Cypress RD over Contra Costa Canal in Contra Costa County, California. It was built in 1938, so it is 87 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 6,167 vehicles a day, roughly 18% of them trucks, projected to reach 15,215 by 2047. The structure is 42 ft (12.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW. Cypress RD
CrossesContra Costa Canal
Location0.06 MI W Rose Ave
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates37.99056, -121.70618
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.
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 evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,167 (2020)
Projected traffic15,215 by 2047
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W. Cypress RD over Contra Costa Canal built?

It was built in 1938, making it 87 years old in 2025.

What condition is W. Cypress RD 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 W. Cypress RD over Contra Costa Canal carry?

About 6,167 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is W. Cypress RD over Contra Costa Canal?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 28 ft wide.

Who owns W. Cypress RD over Contra Costa Canal?

It is owned by the City or Municipal Highway Agency.