Structure 36C0145 · Santa Cruz County, CA

Isbel DR over Branciforte Creek

Carries Isbel DR over Branciforte Creek, 0.2 Mi N Of HWY 1.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 7/9

41 ft end to end. Lengths and the car 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.

Built197155 years old
Length41.3 ft12.6 m
Daily traffic2,015counted 2015
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountySanta Cruz
Location0.2 Mi N Of HWY 1
CarriesIsbel DR
CrossesBranciforte Creek
Coordinates36.99185, -122.01282

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length41.3 ft (12.6 m)
Max Span39.4 ft (12 m)
Deck Width33.5 ft (10.2 m)
Deck Area128.5 sq m
Main Spans1
Year Built1971

Traffic

Avg Daily Traffic2,015 (2015)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number36C0145

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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