US Bridges

Stoneridge Drive over Tassajara Creek

Fair

Alameda County, California · NW of Las Positas Blvd · Structure no. 33C0435

Built
1982
43 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
13,800
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stoneridge Drive over Tassajara Creek is a concrete continuous culvert carrying Stoneridge Drive over Tassajara Creek in Alameda County, California. It was built in 1982, so it is 43 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 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 13,800 vehicles a day, roughly 2% of them trucks, projected to reach 14,717 by 2045. The structure is 36 ft (11 m) long and 130 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesStoneridge Drive
CrossesTassajara Creek
LocationNW of Las Positas Blvd
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.69016, -121.8874
Functional classUrban Minor 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
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable 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 typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width130 ft (39.6 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,800 (2023)
Projected traffic14,717 by 2045
Trucks2%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Stoneridge Drive over Tassajara Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Stoneridge Drive over Tassajara 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 October 2023.

How much traffic does Stoneridge Drive over Tassajara Creek carry?

About 13,800 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Stoneridge Drive over Tassajara Creek?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m) and a deck 130 ft wide.

Who owns Stoneridge Drive over Tassajara Creek?

It is owned by the City or Municipal Highway Agency.