Structure 33C0184 · Alameda County, CA

Buchanan ST over Up Rr Bnsf Ry & Amtrak

Carries Buchanan ST over Up Rr Bnsf Ry & Amtrak, Near I-80.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT457 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

457 ft end to end, longest span 68 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 multi-beam bridge.

Built1963rebuilt 2000
Length457.0 ft139.3 m
Daily traffic10,629counted 1977
Last inspectedNovember 2024every 24 months

Location

StateCalifornia
CountyAlameda
LocationNear I-80
CarriesBuchanan ST
CrossesUp Rr Bnsf Ry & Amtrak
Coordinates37.88704, -122.30775

Physical Characteristics

MaterialConcrete Continuous
DesignStringer/Multi-beam
Total Length457.0 ft (139.3 m)
Max Span67.9 ft (20.7 m)
Deck Width78.1 ft (23.8 m)
Deck Area3315.3 sq m
Main Spans12
Year Built1963 (reconstructed 2000)

Traffic

Avg Daily Traffic10,629 (1977)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33C0184

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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