US Bridges

US Highway 101 NB over Main Street

Good

Ventura County, California · 07-VEN-101-26.72-VEN · Structure no. 52 0168R

Built
1961
64 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
258 ft
4 main spans
Daily traffic
57,500
2020 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over Main Street is a concrete continuous box beam or girders - multiple carrying US Highway 101 NB over Main Street in Ventura County, California. It was built in 1961, so it is 64 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 57,500 vehicles a day, roughly 8% of them trucks, projected to reach 85,675 by 2044. The structure is 258 ft (78.7 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Highway 101 NB
CrossesMain Street
Location07-VEN-101-26.72-VEN
RouteU.S. Route 101
Coordinates34.26453, -119.24336
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating51 US tons
Inventory rating36.8 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length258 ft (78.7 m)
Longest span84 ft (25.7 m)
Deck width52 ft (15.8 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,500 (2020)
Projected traffic85,675 by 2044
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 US Highway 101 NB over Main Street built?

It was built in 1961, making it 64 years old in 2025.

What condition is US Highway 101 NB over Main Street 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 US Highway 101 NB over Main Street carry?

About 57,500 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US Highway 101 NB over Main Street?

The structure is 258 ft (78.7 m) long with a longest span of 84 ft (25.7 m) and a deck 52 ft wide.

Who owns US Highway 101 NB over Main Street?

It is owned by the State Highway Agency.