Structure 37C0201 · Santa Clara County, CA

Montague Expwy over Up Rr Lafayette Bassett

Carries Montague Expwy over Up Rr Lafayette Bassett, 1.2 Miles W/o N. First.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT293 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

293 ft end to end, longest span 87 ft: about 4 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 multi-beam bridge.

Built1962rebuilt 2006
Length292.7 ft89.2 m
Daily traffic52,620counted 2014
Last inspectedOctober 2024every 48 months

Location

StateCalifornia
CountySanta Clara
Location1.2 Miles W/o N. First
CarriesMontague Expwy
CrossesUp Rr Lafayette Bassett
Coordinates37.38900, -121.95553

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length292.7 ft (89.2 m)
Max Span86.9 ft (26.5 m)
Deck Width118.8 ft (36.2 m)
Deck Area3229.0 sq m
Main Spans5
Year Built1962 (reconstructed 2006)

Traffic

Avg Daily Traffic52,620 (2014)
Truck Traffic5%
Lanes On Bridge8
Lanes Under Bridge7

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number37C0201

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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