Structure 37 0193F · Santa Clara County, CA

S280-n880 Connectr over I 280 I 880 & Connectrs

Carries S280-n880 Connectr over I 280 I 880 & Connectrs, 04-scl-280-l5.50-sjs.

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 FT1,256 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,256 ft end to end, longest span 171 ft: about 3.5 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 multi-beam bridge.

Built196363 years old
Length1255.6 ft382.7 m
Daily traffic17,000counted 2002
Last inspectedFebruary 2025every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-280-l5.50-sjs
CarriesS280-n880 Connectr
CrossesI 280 I 880 & Connectrs
Coordinates37.31952, -121.93993

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1255.6 ft (382.7 m)
Max Span170.6 ft (52 m)
Deck Width34.1 ft (10.4 m)
Deck Area3980.1 sq m
Main Spans9
Year Built1963

Traffic

Avg Daily Traffic17,000 (2002)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge17

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number37 0193F

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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