US Bridges

State Route 1 over Baywood Park Road

Good

San Luis Obispo County, California · 05-SLO-001-27.88 · Structure no. 49 0177

Built
1959
66 years old
Condition
Good
inspected September 2021
Type
Slab
Concrete
Length
44 ft
1 main span
Daily traffic
24,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Baywood Park Road is a concrete slab carrying State Route 1 over Baywood Park Road in San Luis Obispo County, California. It was built in 1959, so it is 66 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 44 ft (13.4 m) long and 91 ft wide.

Location

Open in Google Maps
CarriesState Route 1
CrossesBaywood Park Road
Location05-SLO-001-27.88
RouteState Highway 1
CountySan Luis Obispo County
StateCalifornia
Coordinates35.36431, -120.82322
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 evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span40 ft (12.2 m)
Deck width91 ft (27.8 m)
Roadway width85 ft (25.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,000 (2009)
Projected traffic32,342 by 2043
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
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 Baywood Park Road built?

It was built in 1959, making it 66 years old in 2025.

What condition is State Route 1 over Baywood Park Road 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 Baywood Park Road carry?

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

How long is State Route 1 over Baywood Park Road?

The structure is 44 ft (13.4 m) long with a longest span of 40 ft (12.2 m) and a deck 91 ft wide.

Who owns State Route 1 over Baywood Park Road?

It is owned by the State Highway Agency.