Structure 37 0288G · Santa Clara County, CA

N680-e&w130 over Capitol Exp Capitol-n680

Carries N680-e&w130 over Capitol Exp Capitol-n680, 04-scl-680-m1.41-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 FT380 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

380 ft end to end, longest span 96 ft: about 5 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 box-beam bridge.

Built197452 years old
Length379.9 ft115.8 m
Daily traffic10,600counted 2009
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-680-m1.41-sjs
CarriesN680-e&w130
CrossesCapitol Exp Capitol-n680
Coordinates37.35535, -121.83805

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length379.9 ft (115.8 m)
Max Span96.1 ft (29.3 m)
Deck Width25.9 ft (7.9 m)
Deck Area914.8 sq m
Main Spans4
Year Built1974

Traffic

Avg Daily Traffic10,600 (2009)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge11

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number37 0288G

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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