Structure 33 0465M · Alameda County, CA

State Route 24 WB over Bartd (@golden Gate Ave)

Carries State Route 24 WB over Bartd (@golden Gate Ave), 04-ala-024-r4.38-oak.

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 FT632 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

632 ft end to end, longest span 15 ft: about 1.8 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 rigid-frame bridge.

Built197056 years old
Length631.9 ft192.6 m
Daily traffic143,000counted 2010
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-024-r4.38-oak
CarriesState Route 24 WB
CrossesBartd (@golden Gate Ave)
Coordinates37.85010, -122.24053

Physical Characteristics

MaterialConcrete Continuous
DesignFrame
Total Length631.9 ft (192.6 m)
Max Span15.1 ft (4.6 m)
Deck Area4468.3 sq m
Main Spans2
Year Built1970

Traffic

Avg Daily Traffic143,000 (2010)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33 0465M

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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