US Bridges

Stoneridge Drive over Arroyo Mocho

Good

Alameda County, California · 0.3 KM W of Santa Rita RD · Structure no. 33C0410

Built
1981
44 years old
Condition
Good
inspected October 2021
Type
Box Beam or Girders - Multiple
Concrete
Length
229 ft
3 main spans
Daily traffic
15,400
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stoneridge Drive over Arroyo Mocho is a concrete box beam or girders - multiple carrying Stoneridge Drive over Arroyo Mocho in Alameda County, California. It was built in 1981, so it is 44 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 15,400 vehicles a day, roughly 2% of them trucks, projected to reach 16,940 by 2043. The structure is 229 ft (69.7 m) long and 105 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesStoneridge Drive
CrossesArroyo Mocho
Location0.3 KM W of Santa Rita RD
RouteCity Street 0
Coordinates37.68834, -121.88087
Functional classUrban Other Principal 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 protection7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length229 ft (69.7 m)
Longest span87 ft (26.5 m)
Deck width105 ft (32 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,400 (2023)
Projected traffic16,940 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Stoneridge Drive over Arroyo Mocho built?

It was built in 1981, making it 44 years old in 2025.

What condition is Stoneridge Drive over Arroyo Mocho 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 October 2021.

How much traffic does Stoneridge Drive over Arroyo Mocho carry?

About 15,400 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Stoneridge Drive over Arroyo Mocho?

The structure is 229 ft (69.7 m) long with a longest span of 87 ft (26.5 m) and a deck 105 ft wide.

Who owns Stoneridge Drive over Arroyo Mocho?

It is owned by the City or Municipal Highway Agency.