US Bridges

Pomo Street over Contra Costa Canal

Fair

Contra Costa County, California · 0.05 MI S Riverside Drive · Structure no. 28C0480

Built
1987
38 years old
Condition
Fair
inspected November 2024
Type
Arch - Deck
Steel
Length
40 ft
1 main span
Daily traffic
956
2013 count
Owner
County
County Highway Agency

About this bridge

Pomo Street over Contra Costa Canal is a steel arch - deck carrying Pomo Street over Contra Costa Canal in Contra Costa County, California. It was built in 1987, so it is 38 years old, younger 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 956 vehicles a day, roughly 2% of them trucks, projected to reach 1,055 by 2046. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesPomo Street
CrossesContra Costa Canal
Location0.05 MI S Riverside Drive
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates38.02783, -121.96744
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span31 ft (9.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic956 (2013)
Projected traffic1,055 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Pomo Street over Contra Costa Canal built?

It was built in 1987, making it 38 years old in 2025.

What condition is Pomo Street over Contra Costa Canal 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 November 2024.

How much traffic does Pomo Street over Contra Costa Canal carry?

About 956 vehicles per day (2013 count), of which roughly 2% are trucks.

How long is Pomo Street over Contra Costa Canal?

The structure is 40 ft (12.2 m) long with a longest span of 31 ft (9.3 m).

Who owns Pomo Street over Contra Costa Canal?

It is owned by the County Highway Agency.