Structure 52C0118 · Ventura County, CA

Royal Avenue over Arroyo Simi

Carries Royal Avenue over Arroyo Simi, 0.4 Mi W Sequoia AVE.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT128 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

128 ft end to end, longest span 62 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 multi-beam bridge.

Built196858 years old
Length128.0 ft39 m
Daily traffic16,500counted 2022
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountyVentura
Location0.4 Mi W Sequoia AVE
CarriesRoyal Avenue
CrossesArroyo Simi
Coordinates34.26374, -118.73652

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length128.0 ft (39 m)
Max Span62.0 ft (18.9 m)
Deck Width74.1 ft (22.6 m)
Deck Area881.4 sq m
Main Spans2
Year Built1968

Traffic

Avg Daily Traffic16,500 (2022)
Truck Traffic2%
Lanes On Bridge5

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number52C0118

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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