US Bridges

State Route 1 SB over UP RR

Good

Santa Cruz County, California · 05-SCR-001-R1.14-WAT · Structure no. 36 0083L

Built
1967
58 years old, rebuilt 1999
Condition
Good
inspected November 2023
Type
Tee Beam
Concrete Continuous
Length
255 ft
5 main spans
Daily traffic
19,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 SB over UP RR is a concrete continuous tee beam carrying State Route 1 SB over UP RR in Santa Cruz County, California. It was built in 1967 and reconstructed in 1999, so it is 58 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 19,500 vehicles a day, roughly 5% of them trucks, projected to reach 32,094 by 2045. The structure is 255 ft (77.7 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesState Route 1 SB
CrossesUP RR
Location05-SCR-001-R1.14-WAT
RouteState Highway 1
Coordinates36.89983, -121.77763
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length255 ft (77.7 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2009)
Projected traffic32,094 by 2045
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 km)
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 SB over UP RR built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1999.

What condition is State Route 1 SB over UP RR 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 November 2023.

How much traffic does State Route 1 SB over UP RR carry?

About 19,500 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is State Route 1 SB over UP RR?

The structure is 255 ft (77.7 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns State Route 1 SB over UP RR?

It is owned by the State Highway Agency.