US Bridges

S101-LOS Osos Offr over Perfuma Creek

Good

San Luis Obispo County, California · 05-SLO-101-25.94 · Structure no. 49 0062K

Built
1962
63 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
6,508
2012 count
Owner
State
State Highway Agency

About this bridge

S101-LOS Osos Offr over Perfuma Creek is a concrete continuous culvert carrying S101-LOS Osos Offr over Perfuma Creek in San Luis Obispo County, California. It was built in 1962, so it is 63 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 6,508 vehicles a day, roughly 9% of them trucks, projected to reach 11,597 by 2044. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS101-LOS Osos Offr
CrossesPerfuma Creek
Location05-SLO-101-25.94
RouteU.S. Route 101
Coordinates35.24596, -120.68249
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,508 (2012)
Projected traffic11,597 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was S101-LOS Osos Offr over Perfuma Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is S101-LOS Osos Offr over Perfuma Creek 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 S101-LOS Osos Offr over Perfuma Creek carry?

About 6,508 vehicles per day (2012 count), of which roughly 9% are trucks.

How long is S101-LOS Osos Offr over Perfuma Creek?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns S101-LOS Osos Offr over Perfuma Creek?

It is owned by the State Highway Agency.