Structure 37 0311 · Santa Clara County, CA

State Route 87 over Up Rr Amtrak Streets

Carries State Route 87 over Up Rr Amtrak Streets, 04-scl-087-6.27-sjs.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,298 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,298 ft end to end, longest span 131 ft: about 3.6 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.

Built1988rebuilt 2003
Length1298.2 ft395.7 m
Daily traffic99,000counted 2009
Last inspectedJanuary 2024every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-087-6.27-sjs
CarriesState Route 87
CrossesUp Rr Amtrak Streets
Coordinates37.33913, -121.89842

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length1298.2 ft (395.7 m)
Max Span131.2 ft (40 m)
Deck Width157.8 ft (48.1 m)
Deck Area19033.2 sq m
Main Spans12
Year Built1988 (reconstructed 2003)

Traffic

Avg Daily Traffic99,000 (2009)
Lanes On Bridge8
Lanes Under Bridge10

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number37 0311

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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