Structure 33C0462 · Alameda County, CA

Owens DR over Chabot Canal

Carries Owens DR over Chabot Canal, 0.2 Mi East Of Hopyard.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 27 ft across with 2 openings. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built196759 years old
Length26.9 ft8.2 m
Daily traffic9,300counted 2023
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountyAlameda
Location0.2 Mi East Of Hopyard
CarriesOwens DR
CrossesChabot Canal
Coordinates37.69977, -121.89994

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length26.9 ft (8.2 m)
Max Span12.1 ft (3.7 m)
Deck Width116.8 ft (35.6 m)
Deck Area291.9 sq m
Main Spans2
Year Built1967

Traffic

Avg Daily Traffic9,300 (2023)
Truck Traffic2%
Lanes On Bridge6

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number33C0462

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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