US Bridges

Hidden Ranch Road over Arroyo Simi

Good

Ventura County, California · 2.5 MI S/O Los Angeles Av · Structure no. 52C0289

Built
2002
23 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
52 ft
2 main spans
Daily traffic
1,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hidden Ranch Road over Arroyo Simi is a concrete culvert carrying Hidden Ranch Road over Arroyo Simi in Ventura County, California. It was built in 2002, so it is 23 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,232 by 2042. The structure is 52 ft (15.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHidden Ranch Road
CrossesArroyo Simi
Location2.5 MI S/O Los Angeles Av
RouteCity Street 0
Coordinates34.2677, -118.6926
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length52 ft (15.7 m)
Longest span23 ft (7.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic1,232 by 2042
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hidden Ranch Road over Arroyo Simi built?

It was built in 2002, making it 23 years old in 2025.

What condition is Hidden Ranch Road over Arroyo Simi in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Hidden Ranch Road over Arroyo Simi carry?

About 1,000 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Hidden Ranch Road over Arroyo Simi?

The structure is 52 ft (15.7 m) long with a longest span of 23 ft (7.1 m).

Who owns Hidden Ranch Road over Arroyo Simi?

It is owned by the City or Municipal Highway Agency.