US Bridges

Cayucos CR RD over Cayucos Creek

Fair

San Luis Obispo County, California · Thunder Canyon RD · Structure no. 49C0247

Built
1928
97 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
21 ft
1 main span
Daily traffic
276
2006 count
Owner
County
County Highway Agency

About this bridge

Cayucos CR RD over Cayucos Creek is a concrete tee beam carrying Cayucos CR RD over Cayucos Creek in San Luis Obispo County, California. It was built in 1928, so it is 97 years old, older 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 276 vehicles a day, roughly 4% of them trucks, projected to reach 283 by 2046. The structure is 21 ft (6.4 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCayucos CR RD
CrossesCayucos Creek
LocationThunder Canyon RD
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.48592, -120.91325
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic276 (2006)
Projected traffic283 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Cayucos CR RD over Cayucos Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Cayucos CR RD over Cayucos Creek 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 May 2024.

How much traffic does Cayucos CR RD over Cayucos Creek carry?

About 276 vehicles per day (2006 count), of which roughly 4% are trucks.

How long is Cayucos CR RD over Cayucos Creek?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns Cayucos CR RD over Cayucos Creek?

It is owned by the County Highway Agency.