US Bridges

Ranchita Canyon RD over Ranchita Creek

Fair

San Luis Obispo County, California · 2.9 MI N Cross Cyn RD · Structure no. 49C0419

Built
1997
28 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
655
2018 count
Owner
County
County Highway Agency

About this bridge

Ranchita Canyon RD over Ranchita Creek is a concrete slab carrying Ranchita Canyon RD over Ranchita Creek in San Luis Obispo County, California. It was built in 1997, so it is 28 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 655 vehicles a day, roughly 2% of them trucks, projected to reach 350 by 2044. The structure is 43 ft (13 m) long and 25 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesRanchita Canyon RD
CrossesRanchita Creek
Location2.9 MI N Cross Cyn RD
RouteCounty Highway 0
Coordinates35.78151, -120.58949
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length43 ft (13 m)
Longest span40 ft (12.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic655 (2018)
Projected traffic350 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Ranchita Canyon RD over Ranchita Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Ranchita Canyon RD over Ranchita 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 June 2024.

How much traffic does Ranchita Canyon RD over Ranchita Creek carry?

About 655 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Ranchita Canyon RD over Ranchita Creek?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 25 ft wide.

Who owns Ranchita Canyon RD over Ranchita Creek?

It is owned by the County Highway Agency.