US Bridges

State Route 1 over UP RR & AMTRAK

Fair

Santa Barbara County, California · 05-SB-001-46.45 · Structure no. 51 0102

Built
1948
77 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
136 ft
3 main spans
Daily traffic
2,200
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over UP RR & AMTRAK is a steel continuous stringer/multi-beam or girder carrying State Route 1 over UP RR & AMTRAK in Santa Barbara County, California. It was built in 1948, so it is 77 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,200 vehicles a day, roughly 6% of them trucks, projected to reach 14,834 by 2045. The structure is 136 ft (41.5 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesState Route 1
CrossesUP RR & AMTRAK
Location05-SB-001-46.45
RouteState Highway 1
CountySanta Barbara County
StateCalifornia
Coordinates34.92276, -120.56256
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span52 ft (15.8 m)
Deck width32 ft (9.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2009)
Projected traffic14,834 by 2045
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.1 mi (13 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 UP RR & AMTRAK built?

It was built in 1948, making it 77 years old in 2025.

What condition is State Route 1 over UP RR & AMTRAK in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

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

About 2,200 vehicles per day (2009 count), of which roughly 6% are trucks.

How long is State Route 1 over UP RR & AMTRAK?

The structure is 136 ft (41.5 m) long with a longest span of 52 ft (15.8 m) and a deck 32 ft wide.

Who owns State Route 1 over UP RR & AMTRAK?

It is owned by the State Highway Agency.