Structure 33 0612E · Alameda County, CA

I 80-i 880 Conn over SB 880 I 80 W Grand

Carries I 80-i 880 Conn over SB 880 I 80 W Grand, 04-ala-080-2.44-oak.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
11,345 FT OVERALL2,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

11,345 ft end to end, longest span 255 ft: about 32 football fields, or 2.1 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 girder bridge.

Built199630 years old
Length11345.1 ft3,458 m
Daily traffic269,472counted 2001
Last inspectedFebruary 2023every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-080-2.44-oak
CarriesI 80-i 880 Conn
CrossesSB 880 I 80 W Grand
Coordinates37.82540, -122.30927

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length11345.1 ft (3,458 m)
Max Span254.9 ft (77.7 m)
Deck Width54.5 ft (16.6 m)
Deck Area57402.8 sq m
Main Spans66
Year Built1996

Traffic

Avg Daily Traffic269,472 (2001)
Truck Traffic3%
Lanes On Bridge7
Lanes Under Bridge33

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33 0612E

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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