US Bridges

Cayucos DR over State Route 1

Fair

San Luis Obispo County, California · 05-SLO-001-R35.96 · Structure no. 49 0198

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete Continuous
Length
156 ft
4 main spans
Daily traffic
1,300
2010 count
Owner
State
State Highway Agency

About this bridge

Cayucos DR over State Route 1 is a concrete continuous tee beam carrying Cayucos DR over State Route 1 in San Luis Obispo County, California. It was built in 1965, so it is 60 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 1,300 vehicles a day, roughly 2% of them trucks, projected to reach 2,137 by 2045. The structure is 156 ft (47.5 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCayucos DR
CrossesState Route 1
Location05-SLO-001-R35.96
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.4529, -120.90324
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating41.1 US tons
Inventory rating29.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length156 ft (47.5 m)
Longest span48 ft (14.6 m)
Deck width40 ft (12.3 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2010)
Projected traffic2,137 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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 Cayucos DR over State Route 1 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Cayucos DR over State Route 1 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 September 2023.

How much traffic does Cayucos DR over State Route 1 carry?

About 1,300 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Cayucos DR over State Route 1?

The structure is 156 ft (47.5 m) long with a longest span of 48 ft (14.6 m) and a deck 40 ft wide.

Who owns Cayucos DR over State Route 1?

It is owned by the State Highway Agency.