Structure 37 0296 · Santa Clara County, CA

Interstate 680 over Hostetter Road

Carries Interstate 680 over Hostetter Road, 04-scl-680-m4.78-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 FT170 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

170 ft end to end: about 2 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
Length169.9 ft51.8 m
Daily traffic175,000counted 2009
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-680-m4.78-sjs
CarriesInterstate 680
CrossesHostetter Road
Coordinates37.39514, -121.87359

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length169.9 ft (51.8 m)
Max Span164.0 ft (50 m)
Deck Width189.6 ft (57.8 m)
Deck Area2994.0 sq m
Main Spans1
Year Built1974

Traffic

Avg Daily Traffic175,000 (2009)
Truck Traffic5%
Lanes On Bridge9
Lanes Under Bridge6

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 0296

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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