Structure 37 0396H · Santa Clara County, CA

N&s 87- S280 Conn over SR 87 Ramps Guadalupe

Carries N&s 87- S280 Conn over SR 87 Ramps Guadalupe, 04-scl-087-5.10-sjs.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,724 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

1,724 ft end to end, longest span 100 ft: about 4.8 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.

Built197254 years old
Length1723.8 ft525.4 m
Daily traffic14,400counted 2001
Last inspectedJanuary 2024every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-087-5.10-sjs
CarriesN&s 87- S280 Conn
CrossesSR 87 Ramps Guadalupe
Coordinates37.32317, -121.89240

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length1723.8 ft (525.4 m)
Max Span100.1 ft (30.5 m)
Deck Width40.7 ft (12.4 m)
Deck Area6515.0 sq m
Main Spans14
Year Built1972

Traffic

Avg Daily Traffic14,400 (2001)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge12

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number37 0396H

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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