US Bridges

San Pablo Ave over San Pablo Creek

Fair

Contra Costa County, California · At Road 20 · Structure no. 28C0057

Built
1926
99 years old, rebuilt 1970
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete
Length
102 ft
3 main spans
Daily traffic
20,490
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

San Pablo Ave over San Pablo Creek is a concrete tee beam carrying San Pablo Ave over San Pablo Creek in Contra Costa County, California. It was built in 1926 and reconstructed in 1970, so it is 99 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 6 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 20,490 vehicles a day, roughly 5% of them trucks, projected to reach 30,431 by 2042. The structure is 102 ft (31.1 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSan Pablo Ave
CrossesSan Pablo Creek
LocationAt Road 20
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.96262, -122.34513
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating28.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length102 ft (31.1 m)
Longest span34 ft (10.4 m)
Deck width85 ft (25.9 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,490 (2020)
Projected traffic30,431 by 2042
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 San Pablo Ave over San Pablo Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1970.

What condition is San Pablo Ave over San Pablo Creek 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 December 2024.

How much traffic does San Pablo Ave over San Pablo Creek carry?

About 20,490 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is San Pablo Ave over San Pablo Creek?

The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 85 ft wide.

Who owns San Pablo Ave over San Pablo Creek?

It is owned by the City or Municipal Highway Agency.