Structure 52C0029 · Ventura County, CA

Katherine Road over Arroyo Simi

Carries Katherine Road over Arroyo Simi, 0.5 Mi W Of Kuehner DR.

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 overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT39 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

39 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 tee-beam bridge.

Built1962rebuilt 2001
Length39.0 ft11.9 m
Daily traffic3,000counted 2019
Last inspectedMarch 2022every 48 months

Location

StateCalifornia
CountyVentura
Location0.5 Mi W Of Kuehner DR
CarriesKatherine Road
CrossesArroyo Simi
Coordinates34.26514, -118.66878

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length39.0 ft (11.9 m)
Max Span36.1 ft (11 m)
Deck Width83.7 ft (25.5 m)
Deck Area303.4 sq m
Main Spans1
Year Built1962 (reconstructed 2001)

Traffic

Avg Daily Traffic3,000 (2019)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number52C0029

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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