Structure 33 0677 · Alameda County, CA

State Route 92 over I 880 E92-n880 S880-e92

Carries State Route 92 over I 880 E92-n880 S880-e92, 04-ala-092-6.35-hay.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT603 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

603 ft end to end, longest span 137 ft: about 1.7 football fields. 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
Length603.0 ft183.8 m
Daily traffic111,000counted 2009
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-092-6.35-hay
CarriesState Route 92
CrossesI 880 E92-n880 S880-e92
Coordinates37.64397, -122.09406

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length603.0 ft (183.8 m)
Max Span137.5 ft (41.9 m)
Deck Width110.6 ft (33.7 m)
Deck Area6194.1 sq m
Main Spans6
Year Built2011

Traffic

Avg Daily Traffic111,000 (2009)
Truck Traffic7%
Lanes On Bridge6
Lanes Under Bridge15

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 0677

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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