US Bridges

Johnson Drive over G1 Zone 7 Channel

Good

Alameda County, California · 500 Ft S of Stoneridge DR · Structure no. 33C0452

Built
2003
22 years old
Condition
Good
inspected October 2024
Type
Truss - Thru
Steel
Length
62 ft
1 main span
Daily traffic
500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Johnson Drive over G1 Zone 7 Channel is a steel truss - thru carrying Johnson Drive over G1 Zone 7 Channel in Alameda County, California. It was built in 2003, so it is 22 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 500 vehicles a day, roughly 1% of them trucks, projected to reach 1,041 by 2042. The structure is 62 ft (18.9 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesJohnson Drive
CrossesG1 Zone 7 Channel
Location500 Ft S of Stoneridge DR
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.68937, -121.91437
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating40 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic1,041 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Johnson Drive over G1 Zone 7 Channel built?

It was built in 2003, making it 22 years old in 2025.

What condition is Johnson Drive over G1 Zone 7 Channel 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 2024.

How much traffic does Johnson Drive over G1 Zone 7 Channel carry?

About 500 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Johnson Drive over G1 Zone 7 Channel?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns Johnson Drive over G1 Zone 7 Channel?

It is owned by the City or Municipal Highway Agency.