Structure 33 0678F · Alameda County, CA

W92-s880 Connector over I 880 E92-n880 Connectr

Carries W92-s880 Connector over I 880 E92-n880 Connectr, 04-ala-092-6.37-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 FT424 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

424 ft end to end, longest span 118 ft: about 6 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.

Built201016 years old
Length424.2 ft129.3 m
Daily traffic40,000counted 2011
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-092-6.37-hay
CarriesW92-s880 Connector
CrossesI 880 E92-n880 Connectr
Coordinates37.64546, -122.09468

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length424.2 ft (129.3 m)
Max Span118.4 ft (36.1 m)
Deck Width26.9 ft (8.2 m)
Deck Area1060.3 sq m
Main Spans4
Year Built2010

Traffic

Avg Daily Traffic40,000 (2011)
Truck Traffic7%
Lanes On Bridge1
Lanes Under Bridge11

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 0678F

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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