US Bridges

US Highway 101 NB over UP RR AMTRAK & SR 1

Good

Ventura County, California · 07-VEN-101-R38.95 · Structure no. 52 0207R

Built
1973
52 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
484 ft
4 main spans
Daily traffic
38,000
2019 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over UP RR AMTRAK & SR 1 is a prestressed concrete continuous box beam or girders - multiple carrying US Highway 101 NB over UP RR AMTRAK & SR 1 in Ventura County, California. It was built in 1973, so it is 52 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 38,000 vehicles a day, roughly 8% of them trucks, projected to reach 75,323 by 2041. The structure is 484 ft (147.5 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Highway 101 NB
CrossesUP RR AMTRAK & SR 1
Location07-VEN-101-R38.95
RouteU.S. Route 101
Coordinates34.34333, -119.41616
Functional classRural Principal Arterial - Other

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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length484 ft (147.5 m)
Longest span148 ft (45.1 m)
Deck width53 ft (16.3 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,000 (2019)
Projected traffic75,323 by 2041
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 UP RR AMTRAK & SR 1 built?

It was built in 1973, making it 52 years old in 2025.

What condition is US Highway 101 NB over UP RR AMTRAK & SR 1 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 December 2024.

How much traffic does US Highway 101 NB over UP RR AMTRAK & SR 1 carry?

About 38,000 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is US Highway 101 NB over UP RR AMTRAK & SR 1?

The structure is 484 ft (147.5 m) long with a longest span of 148 ft (45.1 m) and a deck 53 ft wide.

Who owns US Highway 101 NB over UP RR AMTRAK & SR 1?

It is owned by the State Highway Agency.