US Bridges

State Route 1 over Arroyo Del Corral

Good

San Luis Obispo County, California · 05-SLO-001-64.86 · Structure no. 49 0259

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
380 ft
3 main spans
Daily traffic
3,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Arroyo Del Corral is a prestressed concrete continuous box beam or girders - multiple carrying State Route 1 over Arroyo Del Corral in San Luis Obispo County, California. It was built in 2017, so it is 8 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 3,000 vehicles a day, roughly 2% of them trucks, projected to reach 3,350 by 2041. The structure is 380 ft (115.8 m) long and 44 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesState Route 1
CrossesArroyo Del Corral
Location05-SLO-001-64.86
RouteState Highway 1
CountySan Luis Obispo County
StateCalifornia
Coordinates35.68437, -121.2852
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 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length380 ft (115.8 m)
Longest span150 ft (45.7 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2009)
Projected traffic3,350 by 2041
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

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 Arroyo Del Corral built?

It was built in 2017, making it 8 years old in 2025.

What condition is State Route 1 over Arroyo Del Corral 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 2023.

How much traffic does State Route 1 over Arroyo Del Corral carry?

About 3,000 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is State Route 1 over Arroyo Del Corral?

The structure is 380 ft (115.8 m) long with a longest span of 150 ft (45.7 m) and a deck 44 ft wide.

Who owns State Route 1 over Arroyo Del Corral?

It is owned by the State Highway Agency.