US Bridges

Los Osos Valley RD over US Highway 101

Fair

San Luis Obispo County, California · 05-SLO-101-25.91-SLO · Structure no. 49 0185R

Built
2015
10 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
369 ft
4 main spans
Daily traffic
11,415
2016 count
Owner
State
State Highway Agency

About this bridge

Los Osos Valley RD over US Highway 101 is a prestressed concrete continuous box beam or girders - multiple carrying Los Osos Valley RD over US Highway 101 in San Luis Obispo County, California. It was built in 2015, so it is 10 years old, younger 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 11,415 vehicles a day, roughly 4% of them trucks, projected to reach 17,302 by 2042. The structure is 369 ft (112.6 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLos Osos Valley RD
CrossesUS Highway 101
Location05-SLO-101-25.91-SLO
RouteCounty Highway 0Y369
Coordinates35.24501, -120.68253
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length369 ft (112.6 m)
Longest span112 ft (34.1 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,415 (2016)
Projected traffic17,302 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 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 Los Osos Valley RD over US Highway 101 built?

It was built in 2015, making it 10 years old in 2025.

What condition is Los Osos Valley RD over US Highway 101 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 Los Osos Valley RD over US Highway 101 carry?

About 11,415 vehicles per day (2016 count), of which roughly 4% are trucks.

How long is Los Osos Valley RD over US Highway 101?

The structure is 369 ft (112.6 m) long with a longest span of 112 ft (34.1 m) and a deck 40 ft wide.

Who owns Los Osos Valley RD over US Highway 101?

It is owned by the State Highway Agency.