US Bridges

San Andres Ave over Atascadero Creek

Fair

San Luis Obispo County, California · 0.25 MI W S.R. 41 · Structure no. 49C0159

Built
1993
32 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
2,275
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

San Andres Ave over Atascadero Creek is a concrete continuous slab carrying San Andres Ave over Atascadero Creek in San Luis Obispo County, California. It was built in 1993, so it is 32 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 2,275 vehicles a day, roughly 3% of them trucks, projected to reach 3,856 by 2046. The structure is 78 ft (23.8 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSan Andres Ave
CrossesAtascadero Creek
Location0.25 MI W S.R. 41
RouteCity Street 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.48099, -120.67059
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span30 ft (9.2 m)
Deck width40 ft (12.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic2,275 (2018)
Projected traffic3,856 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Andres Ave over Atascadero Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is San Andres Ave 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 October 2024.

How much traffic does San Andres Ave over Atascadero Creek carry?

About 2,275 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is San Andres Ave over Atascadero Creek?

The structure is 78 ft (23.8 m) long with a longest span of 30 ft (9.2 m) and a deck 40 ft wide.

Who owns San Andres Ave over Atascadero Creek?

It is owned by the City or Municipal Highway Agency.