US Bridges

State Route 1 over SR 41 (@pm 0.01)

Good

San Luis Obispo County, California · 05-SLO-001-30.14 · Structure no. 49 0182

Built
1962
63 years old, rebuilt 1998
Condition
Good
inspected September 2021
Type
Box Beam or Girders - Multiple
Concrete
Length
71 ft
1 main span
Daily traffic
24,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over SR 41 (@pm 0.01) is a concrete box beam or girders - multiple carrying State Route 1 over SR 41 (@pm 0.01) in San Luis Obispo County, California. It was built in 1962 and reconstructed in 1998, 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 24,000 vehicles a day, roughly 4% of them trucks, projected to reach 32,342 by 2043. The structure is 71 ft (21.5 m) long and 89 ft wide.

CarriesState Route 1
CrossesSR 41 (@pm 0.01)
Location05-SLO-001-30.14
RouteState Highway 1
Coordinates35.38001, -120.85536
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating28.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length71 ft (21.5 m)
Longest span68 ft (20.7 m)
Deck width89 ft (27 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,000 (2009)
Projected traffic32,342 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 SR 41 (@pm 0.01) built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1998.

What condition is State Route 1 over SR 41 (@pm 0.01) 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 SR 41 (@pm 0.01) carry?

About 24,000 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is State Route 1 over SR 41 (@pm 0.01)?

The structure is 71 ft (21.5 m) long with a longest span of 68 ft (20.7 m) and a deck 89 ft wide.

Who owns State Route 1 over SR 41 (@pm 0.01)?

It is owned by the State Highway Agency.