Structure 37 0008R · Santa Clara County, CA

NB US Highway 101 over Carnadero Creek

Carries NB US Highway 101 over Carnadero Creek, 04-scl-101-4.20.

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
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT142 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

142 ft end to end, longest span 35 ft. 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 tee-beam bridge.

Built1931rebuilt 1953
Length142.1 ft43.3 m
Daily traffic26,000counted 2009
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountySanta Clara
Location04-scl-101-4.20
CarriesNB US Highway 101
CrossesCarnadero Creek
Coordinates36.97610, -121.55535

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length142.1 ft (43.3 m)
Max Span35.1 ft (10.7 m)
Deck Width39.4 ft (12 m)
Deck Area519.6 sq m
Main Spans4
Year Built1931 (reconstructed 1953)

Traffic

Avg Daily Traffic26,000 (2009)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number37 0008R

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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