US Bridges

US Highway 101 NB over UP RR & AMTRAK

Fair

Santa Barbara County, California · 05-SB-101-R0.25 · Structure no. 51 0229R

Built
1971
54 years old, rebuilt 1997
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
275 ft
3 main spans
Daily traffic
32,500
2022 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over UP RR & AMTRAK is a concrete continuous box beam or girders - multiple carrying US Highway 101 NB over UP RR & AMTRAK in Santa Barbara County, California. It was built in 1971 and reconstructed in 1997, so it is 54 years old, younger 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 5 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 32,500 vehicles a day, roughly 5% of them trucks, projected to reach 48,480 by 2042. The structure is 275 ft (83.8 m) long and 53 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesUS Highway 101 NB
CrossesUP RR & AMTRAK
Location05-SB-101-R0.25
RouteU.S. Route 101
Coordinates34.37886, -119.4807
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length275 ft (83.8 m)
Longest span116 ft (35.4 m)
Deck width53 ft (16.2 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,500 (2022)
Projected traffic48,480 by 2042
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 US Highway 101 NB over UP RR & AMTRAK built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1997.

What condition is US Highway 101 NB 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 July 2024.

How much traffic does US Highway 101 NB over UP RR & AMTRAK carry?

About 32,500 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is US Highway 101 NB over UP RR & AMTRAK?

The structure is 275 ft (83.8 m) long with a longest span of 116 ft (35.4 m) and a deck 53 ft wide.

Who owns US Highway 101 NB over UP RR & AMTRAK?

It is owned by the State Highway Agency.