US Bridges

Lewis Ave over Atascadero Creek

Good

San Luis Obispo County, California · 0.2 MI West of SR 41 · Structure no. 49C0442

Built
2007
18 years old
Condition
Good
inspected May 2024
Type
Arch - Thru
Steel
Length
164 ft
1 main span
Daily traffic
500
2007 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lewis Ave over Atascadero Creek is a steel arch - thru carrying Lewis Ave over Atascadero Creek in San Luis Obispo County, California. It was built in 2007, so it is 18 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 1% of them trucks, projected to reach 1,598 by 2044. The structure is 164 ft (50 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLewis Ave
CrossesAtascadero Creek
Location0.2 MI West of SR 41
RouteCity Street 0
Coordinates35.48955, -120.66531
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
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 typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length164 ft (50 m)
Longest span161 ft (49 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck22 ft (6.9 m)

Traffic and service

Average daily traffic500 (2007)
Projected traffic1,598 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lewis Ave over Atascadero Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Lewis Ave over Atascadero Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Lewis Ave over Atascadero Creek carry?

About 500 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is Lewis Ave over Atascadero Creek?

The structure is 164 ft (50 m) long with a longest span of 161 ft (49 m) and a deck 34 ft wide.

Who owns Lewis Ave over Atascadero Creek?

It is owned by the City or Municipal Highway Agency.