US Bridges

State Route 1 over Bay Avenue

Good

Santa Cruz County, California · 05-SCR-001-13.20-CPTL · Structure no. 36 0036

Built
1995
30 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
140 ft
2 main spans
Daily traffic
97,000
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Bay Avenue is a prestressed concrete slab carrying State Route 1 over Bay Avenue in Santa Cruz County, California. It was built in 1995, so it is 30 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 97,000 vehicles a day, roughly 4% of them trucks, projected to reach 160,823 by 2043. The structure is 140 ft (42.7 m) long and 117 ft wide.

CarriesState Route 1
CrossesBay Avenue
Location05-SCR-001-13.20-CPTL
RouteState Highway 1
Coordinates36.98341, -121.95677
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 inspectionJuly 2023
Inspection intervalevery 24 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length140 ft (42.7 m)
Longest span69 ft (21 m)
Deck width117 ft (35.8 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97,000 (2019)
Projected traffic160,823 by 2043
Trucks4%
Lanes on structure4
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 Bay Avenue built?

It was built in 1995, making it 30 years old in 2025.

What condition is State Route 1 over Bay Avenue 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 July 2023.

How much traffic does State Route 1 over Bay Avenue carry?

About 97,000 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is State Route 1 over Bay Avenue?

The structure is 140 ft (42.7 m) long with a longest span of 69 ft (21 m) and a deck 117 ft wide.

Who owns State Route 1 over Bay Avenue?

It is owned by the State Highway Agency.