Structure 33C0153 · Alameda County, CA

Leona Creek Drive over Lion Creek

Carries Leona Creek Drive over Lion Creek, Btw 66th & 69th Aves.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

37 ft end to end, longest span 20 ft. 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.

Built1965rebuilt 2008
Length37.4 ft11.4 m
Daily traffic200counted 2010
Last inspectedNovember 2024every 48 months

Location

StateCalifornia
CountyAlameda
LocationBtw 66th & 69th Aves
CarriesLeona Creek Drive
CrossesLion Creek
Coordinates37.75643, -122.19885

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length37.4 ft (11.4 m)
Max Span20.0 ft (6.1 m)
Deck Width47.2 ft (14.4 m)
Deck Area164.2 sq m
Main Spans2
Year Built1965 (reconstructed 2008)

Traffic

Avg Daily Traffic200 (2010)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number33C0153

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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