US Bridges

Garrow Drive over Contra Costa Canal

Good

Contra Costa County, California · 0.1 MI S of Davison DR · Structure no. 28C0493

Built
1991
34 years old
Condition
Good
inspected January 2023
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
4,500
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Garrow Drive over Contra Costa Canal is a prestressed concrete tee beam carrying Garrow Drive over Contra Costa Canal in Contra Costa County, California. It was built in 1991, so it is 34 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 4,500 vehicles a day, projected to reach 5,545 by 2041. The structure is 40 ft (12.2 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesGarrow Drive
CrossesContra Costa Canal
Location0.1 MI S of Davison DR
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.98412, -121.79811
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2020)
Projected traffic5,545 by 2041
Trucks0%
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

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 Garrow Drive over Contra Costa Canal built?

It was built in 1991, making it 34 years old in 2025.

What condition is Garrow Drive 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 2023.

How much traffic does Garrow Drive over Contra Costa Canal carry?

About 4,500 vehicles per day (2020 count).

How long is Garrow Drive over Contra Costa Canal?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 52 ft wide.

Who owns Garrow Drive over Contra Costa Canal?

It is owned by the City or Municipal Highway Agency.