Structure 37 0501 · Santa Clara County, CA

Leigh Avenue over State Route 85

Carries Leigh Avenue over State Route 85, 04-scl-085-8.77-sjs.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT193 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

193 ft end to end, longest span 103 ft: about 3 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.

Built199432 years old
Length192.9 ft58.8 m
Daily traffic10,800counted 1999
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-085-8.77-sjs
CarriesLeigh Avenue
CrossesState Route 85
Coordinates37.25024, -121.92212

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length192.9 ft (58.8 m)
Max Span102.7 ft (31.3 m)
Deck Width75.8 ft (23.1 m)
Deck Area1358.3 sq m
Main Spans2
Year Built1994

Traffic

Avg Daily Traffic10,800 (1999)
Truck Traffic1%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number37 0501

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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