US Bridges

Buckley RD over E Br San Luis Obispo Crk

Fair

San Luis Obispo County, California · 1.5 MI E US 101 · Structure no. 49C0379

Built
1978
47 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
4,396
2008 count
Owner
County
County Highway Agency

About this bridge

Buckley RD over E Br San Luis Obispo Crk is a concrete slab carrying Buckley RD over E Br San Luis Obispo Crk in San Luis Obispo County, California. It was built in 1978, so it is 47 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 6 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 4,396 vehicles a day, roughly 16% of them trucks, projected to reach 7,213 by 2041. The structure is 33 ft (10.1 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesBuckley RD
CrossesE Br San Luis Obispo Crk
Location1.5 MI E US 101
RouteCounty Highway 0
Coordinates35.23578, -120.65781
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,396 (2008)
Projected traffic7,213 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Buckley RD over E Br San Luis Obispo Crk built?

It was built in 1978, making it 47 years old in 2025.

What condition is Buckley RD over E Br San Luis Obispo Crk 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 2023.

How much traffic does Buckley RD over E Br San Luis Obispo Crk carry?

About 4,396 vehicles per day (2008 count), of which roughly 16% are trucks.

How long is Buckley RD over E Br San Luis Obispo Crk?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns Buckley RD over E Br San Luis Obispo Crk?

It is owned by the County Highway Agency.