US Bridges

Potrero Road over Sherwood Lake

Good

Ventura County, California · At Stafford RD · Structure no. 52C0286

Built
1990
35 years old
Condition
Good
inspected August 2022
Type
Culvert
Concrete
Length
54 ft
5 main spans
Daily traffic
3,600
2022 count
Owner
County
County Highway Agency

About this bridge

Potrero Road over Sherwood Lake is a concrete culvert carrying Potrero Road over Sherwood Lake in Ventura County, California. It was built in 1990, so it is 35 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 3,600 vehicles a day, roughly 1% of them trucks, projected to reach 4,561 by 2040. The structure is 54 ft (16.5 m) long and 102 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesPotrero Road
CrossesSherwood Lake
LocationAt Stafford RD
RouteCity Street 0
CountyVentura County
StateCalifornia
Coordinates34.14101, -118.87774
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior 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 spans5
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span10 ft (3 m)
Deck width102 ft (31 m)
Roadway width102 ft (31 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2022)
Projected traffic4,561 by 2040
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Potrero Road over Sherwood Lake built?

It was built in 1990, making it 35 years old in 2025.

What condition is Potrero Road over Sherwood Lake 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 August 2022.

How much traffic does Potrero Road over Sherwood Lake carry?

About 3,600 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Potrero Road over Sherwood Lake?

The structure is 54 ft (16.5 m) long with a longest span of 10 ft (3 m) and a deck 102 ft wide.

Who owns Potrero Road over Sherwood Lake?

It is owned by the County Highway Agency.