US Bridges

Encina Ave over Yerba Buena Creek

Fair

San Luis Obispo County, California · 0.5 MI Se/O I ST · Structure no. 49C0173

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
37 ft
1 main span
Daily traffic
1,365
2018 count
Owner
County
County Highway Agency

About this bridge

Encina Ave over Yerba Buena Creek is a concrete slab carrying Encina Ave over Yerba Buena Creek in San Luis Obispo County, California. It was built in 1984, so it is 41 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 1,365 vehicles a day, roughly 2% of them trucks, projected to reach 1,365 by 2044. The structure is 37 ft (11.2 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesEncina Ave
CrossesYerba Buena Creek
Location0.5 MI Se/O I ST
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.38918, -120.60499
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating66.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span34 ft (10.5 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,365 (2018)
Projected traffic1,365 by 2044
Trucks2%
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 Encina Ave over Yerba Buena Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Encina Ave over Yerba Buena 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 July 2024.

How much traffic does Encina Ave over Yerba Buena Creek carry?

About 1,365 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Encina Ave over Yerba Buena Creek?

The structure is 37 ft (11.2 m) long with a longest span of 34 ft (10.5 m) and a deck 29 ft wide.

Who owns Encina Ave over Yerba Buena Creek?

It is owned by the County Highway Agency.