Structure 33 0082 · Alameda County, CA

State Route 112 over Up Rr Carden & Beecher

Carries State Route 112 over Up Rr Carden & Beecher, 04-ala-112-r0.06-sln.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,325 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 8/9

1,325 ft end to end, longest span 120 ft: about 3.7 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.

Built198244 years old
Length1325.1 ft403.9 m
Daily traffic41,250counted 2009
Last inspectedNovember 2024every 48 months

Location

StateCalifornia
CountyAlameda
Location04-ala-112-r0.06-sln
CarriesState Route 112
CrossesUp Rr Carden & Beecher
Coordinates37.71649, -122.18590

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length1325.1 ft (403.9 m)
Max Span120.1 ft (36.6 m)
Deck Width69.9 ft (21.3 m)
Deck Area8603.1 sq m
Main Spans8
Year Built1982

Traffic

Avg Daily Traffic41,250 (2009)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33 0082

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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