Structure 33 0302H · Alameda County, CA

E&w580-e24 Connctr over I580 Sr24 Bartd Conn ST

Carries E&w580-e24 Connctr over I580 Sr24 Bartd Conn ST, 04-ala-580-45.23-oak.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,940 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

3,940 ft end to end, longest span 150 ft: about 11 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.

Built197056 years old
Length3940.0 ft1200.9 m
Daily traffic40,000counted 2002
Last inspectedJuly 2024every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-580-45.23-oak
CarriesE&w580-e24 Connctr
CrossesI580 Sr24 Bartd Conn ST
Coordinates37.82508, -122.27306

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length3940.0 ft (1200.9 m)
Max Span149.9 ft (45.7 m)
Deck Width38.1 ft (11.6 m)
Deck Area13930.4 sq m
Main Spans45
Year Built1970

Traffic

Avg Daily Traffic40,000 (2002)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge42

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33 0302H

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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