US Bridges

San Gabriel RD over Atascadero Creek

Fair

San Luis Obispo County, California · N of W Lindo Ave · Structure no. 49C0160

Built
1969
56 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
62 ft
2 main spans
Daily traffic
800
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

San Gabriel RD over Atascadero Creek is a concrete continuous tee beam carrying San Gabriel RD over Atascadero Creek in San Luis Obispo County, California. It was built in 1969, so it is 56 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 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 800 vehicles a day, roughly 4% of them trucks, projected to reach 956 by 2044. The structure is 62 ft (18.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSan Gabriel RD
CrossesAtascadero Creek
LocationN of W Lindo Ave
RouteCity Street 0
Coordinates35.46352, -120.67563
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2014)
Projected traffic956 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 San Gabriel RD over Atascadero Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is San Gabriel RD over Atascadero 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 September 2024.

How much traffic does San Gabriel RD over Atascadero Creek carry?

About 800 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is San Gabriel RD over Atascadero Creek?

The structure is 62 ft (18.9 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns San Gabriel RD over Atascadero Creek?

It is owned by the City or Municipal Highway Agency.