US Bridges

Lompoc Casmalia RD over UP RR & AMTRAK

Fair

Santa Barbara County, California · 0.4 MI S/O Point Sal RD · Structure no. 51C0036

Built
1943
82 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
279 ft
1 main span
Daily traffic
371
2009 count
Owner
County
County Highway Agency

About this bridge

Lompoc Casmalia RD over UP RR & AMTRAK is a steel stringer/multi-beam or girder carrying Lompoc Casmalia RD over UP RR & AMTRAK in Santa Barbara County, California. It was built in 1943, so it is 82 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 371 vehicles a day, roughly 3% of them trucks, projected to reach 1,482 by 2042. The structure is 279 ft (85.1 m) long and 31 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

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CarriesLompoc Casmalia RD
CrossesUP RR & AMTRAK
Location0.4 MI S/O Point Sal RD
RouteCounty Highway 0
CountySanta Barbara County
StateCalifornia
Coordinates34.8367, -120.52779
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.2 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+11 approach)
Design loadH 15
Structure length279 ft (85.1 m)
Longest span65 ft (19.9 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic371 (2009)
Projected traffic1,482 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Lompoc Casmalia RD over UP RR & AMTRAK built?

It was built in 1943, making it 82 years old in 2025.

What condition is Lompoc Casmalia RD 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 January 2025.

How much traffic does Lompoc Casmalia RD over UP RR & AMTRAK carry?

About 371 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Lompoc Casmalia RD over UP RR & AMTRAK?

The structure is 279 ft (85.1 m) long with a longest span of 65 ft (19.9 m) and a deck 31 ft wide.

Who owns Lompoc Casmalia RD over UP RR & AMTRAK?

It is owned by the County Highway Agency.