Structure 33C0077 · Alameda County, CA

Crow Canyon RD over Crow Creek

Carries Crow Canyon RD over Crow Creek, 0.7 Mi N/o I-580.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

57 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built197155 years old
Length57.4 ft17.5 m
Daily traffic28,800counted 2014
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountyAlameda
Location0.7 Mi N/o I-580
CarriesCrow Canyon RD
CrossesCrow Creek
Coordinates37.70232, -122.05384

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length57.4 ft (17.5 m)
Max Span52.2 ft (15.9 m)
Deck Width109.9 ft (33.5 m)
Deck Area586.2 sq m
Main Spans1
Year Built1971

Traffic

Avg Daily Traffic28,800 (2014)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number33C0077

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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