Structure 33 0750 · Alameda County, CA

Calaroga AVE over State Route 92 & Ramp

Carries Calaroga AVE over State Route 92 & Ramp, 04-ala-092-r6.03-hay.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT208 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

208 ft end to end, longest span 109 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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 box-beam bridge.

Built201115 years old
Length208.0 ft63.4 m
Daily traffic8,500counted 2010
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-092-r6.03-hay
CarriesCalaroga AVE
CrossesState Route 92 & Ramp
Coordinates37.63938, -122.09729

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length208.0 ft (63.4 m)
Max Span108.6 ft (33.1 m)
Deck Width51.8 ft (15.8 m)
Deck Area1001.7 sq m
Main Spans2
Year Built2011

Traffic

Avg Daily Traffic8,500 (2010)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge9

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33 0750

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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