US Bridges

State Route 33 over Shell Road

Good

Ventura County, California · 07-VEN-033-2.65 · Structure no. 52 0185L

Built
1956
69 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
173 ft
4 main spans
Daily traffic
15,500
2022 count
Owner
State
State Highway Agency

About this bridge

State Route 33 over Shell Road is a concrete continuous slab carrying State Route 33 over Shell Road in Ventura County, California. It was built in 1956, so it is 69 years old, older 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 15,500 vehicles a day, roughly 8% of them trucks, projected to reach 22,000 by 2046. The structure is 173 ft (52.7 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 33
CrossesShell Road
Location07-VEN-033-2.65
RouteState Highway 33
Coordinates34.31549, -119.29449
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating36.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length173 ft (52.7 m)
Longest span44 ft (13.4 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2022)
Projected traffic22,000 by 2046
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 33 over Shell Road built?

It was built in 1956, making it 69 years old in 2025.

What condition is State Route 33 over Shell Road 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 February 2024.

How much traffic does State Route 33 over Shell Road carry?

About 15,500 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is State Route 33 over Shell Road?

The structure is 173 ft (52.7 m) long with a longest span of 44 ft (13.4 m) and a deck 44 ft wide.

Who owns State Route 33 over Shell Road?

It is owned by the State Highway Agency.