Structure 33C0056R · Alameda County, CA

Alvarado-niles RD over Dry Creek

Carries Alvarado-niles RD over Dry Creek, 0.3 Mi E/o Central AVE.

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 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

53 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.

Built195769 years old
Length53.1 ft16.2 m
Daily traffic36,400counted 2009
Last inspectedSeptember 2022every 48 months

Location

StateCalifornia
CountyAlameda
Location0.3 Mi E/o Central AVE
CarriesAlvarado-niles RD
CrossesDry Creek
Coordinates37.59071, -122.03458

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length53.1 ft (16.2 m)
Max Span47.9 ft (14.6 m)
Deck Width48.2 ft (14.7 m)
Deck Area238.1 sq m
Main Spans1
Year Built1957

Traffic

Avg Daily Traffic36,400 (2009)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number33C0056R

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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