Structure 37 0303 · Santa Clara County, CA

Interstate 680 over Jacklin Road

Carries Interstate 680 over Jacklin Road, 04-scl-680-m8.50-mps.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT164 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 7/9

164 ft end to end, longest span 81 ft: 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.

Built1971rebuilt 2010
Length164.0 ft50 m
Daily traffic128,000counted 2010
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-680-m8.50-mps
CarriesInterstate 680
CrossesJacklin Road
Coordinates37.44685, -121.89095

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length164.0 ft (50 m)
Max Span81.0 ft (24.7 m)
Deck Width153.2 ft (46.7 m)
Deck Area2,335 sq m
Main Spans2
Year Built1971 (reconstructed 2010)

Traffic

Avg Daily Traffic128,000 (2010)
Truck Traffic6%
Lanes On Bridge7
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 0303

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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