US Bridges

State Route 1 over Villa Creek

Good

San Luis Obispo County, California · 05-SLO-001-40.29 · Structure no. 49 0073

Built
1962
63 years old
Condition
Good
inspected September 2021
Type
Slab
Concrete Continuous
Length
94 ft
4 main spans
Daily traffic
10,300
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Villa Creek is a concrete continuous slab carrying State Route 1 over Villa Creek in San Luis Obispo County, California. It was built in 1962, so it is 63 years old, older 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 10,300 vehicles a day, roughly 6% of them trucks, projected to reach 8,443 by 2039. The structure is 94 ft (28.7 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesState Route 1
CrossesVilla Creek
Location05-SLO-001-40.29
RouteState Highway 1
Coordinates35.46848, -120.97647
Functional classRural Minor Arterial

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 inspectionSeptember 2021
Inspection intervalevery 48 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length94 ft (28.7 m)
Longest span26 ft (7.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,300 (2009)
Projected traffic8,443 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 1 over Villa Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is State Route 1 over Villa 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 September 2021.

How much traffic does State Route 1 over Villa Creek carry?

About 10,300 vehicles per day (2009 count), of which roughly 6% are trucks.

How long is State Route 1 over Villa Creek?

The structure is 94 ft (28.7 m) long with a longest span of 26 ft (7.9 m) and a deck 43 ft wide.

Who owns State Route 1 over Villa Creek?

It is owned by the State Highway Agency.