Structure 36 0009 · Santa Cruz County, CA

State Route 236 over Boulder Creek

Carries State Route 236 over Boulder Creek, 05-scr-236-1.61.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT72 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

72 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 deck arch.

Built1921105 years old
Length71.9 ft21.9 m
Daily traffic4,350counted 2016
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountySanta Cruz
Location05-scr-236-1.61
CarriesState Route 236
CrossesBoulder Creek
Coordinates37.13836, -122.14342

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length71.9 ft (21.9 m)
Max Span49.9 ft (15.2 m)
Deck Width23.6 ft (7.2 m)
Deck Area157.7 sq m
Main Spans1
Year Built1921

Traffic

Avg Daily Traffic4,350 (2016)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number36 0009

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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