US Bridges

U.S. Highway 101 over Main Street

Fair

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

Built
1961
64 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
273 ft
4 main spans
Daily traffic
60,500
2020 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over Main Street is a concrete continuous box beam or girders - multiple carrying U.S. Highway 101 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 60,500 vehicles a day, roughly 8% of them trucks, projected to reach 108,310 by 2042. The structure is 273 ft (83.1 m) long and 75 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesU.S. Highway 101
CrossesMain Street
Location07-VEN-101-26.72-VEN
RouteU.S. Route 101
Coordinates34.26442, -119.24287
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating76.1 US tons
Inventory rating45.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length273 ft (83.1 m)
Longest span98 ft (29.8 m)
Deck width75 ft (23 m)
Roadway width73 ft (22.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,500 (2020)
Projected traffic108,310 by 2042
Trucks8%
Lanes on structure4
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 U.S. Highway 101 over Main Street built?

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

What condition is U.S. Highway 101 over Main Street in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does U.S. Highway 101 over Main Street carry?

About 60,500 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is U.S. Highway 101 over Main Street?

The structure is 273 ft (83.1 m) long with a longest span of 98 ft (29.8 m) and a deck 75 ft wide.

Who owns U.S. Highway 101 over Main Street?

It is owned by the State Highway Agency.