US Bridges

Las Posas RD over Route 101

Good

Ventura County, California · 07-VEN-101-15.89-CMRL · Structure no. 52 0246

Built
1975
50 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
270 ft
2 main spans
Daily traffic
24,624
2019 count
Owner
State
State Highway Agency

About this bridge

Las Posas RD over Route 101 is a prestressed concrete continuous box beam or girders - multiple carrying Las Posas RD over Route 101 in Ventura County, California. It was built in 1975, so it is 50 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 24,624 vehicles a day, roughly 3% of them trucks, projected to reach 36,689 by 2044. The structure is 270 ft (82.2 m) long and 87 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLas Posas RD
CrossesRoute 101
Location07-VEN-101-15.89-CMRL
RouteCity Street 0N020
Coordinates34.21881, -119.06967
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating41.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length270 ft (82.2 m)
Longest span136 ft (41.5 m)
Deck width87 ft (26.5 m)
Roadway width79 ft (24.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,624 (2019)
Projected traffic36,689 by 2044
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Las Posas RD over Route 101 built?

It was built in 1975, making it 50 years old in 2025.

What condition is Las Posas RD over Route 101 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 Las Posas RD over Route 101 carry?

About 24,624 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Las Posas RD over Route 101?

The structure is 270 ft (82.2 m) long with a longest span of 136 ft (41.5 m) and a deck 87 ft wide.

Who owns Las Posas RD over Route 101?

It is owned by the State Highway Agency.