US Bridges

Alisos Road over Happy Canyon Creek

Fair

Santa Barbara County, California · 0.13 MI S Happy Canyon RD · Structure no. 51C0190

Built
1969
56 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
116 ft
4 main spans
Daily traffic
387
2003 count
Owner
County
County Highway Agency

About this bridge

Alisos Road over Happy Canyon Creek is a concrete continuous slab carrying Alisos Road over Happy Canyon Creek in Santa Barbara County, California. It was built in 1969, so it is 56 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 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 387 vehicles a day, roughly 7% of them trucks, projected to reach 197 by 2044. The structure is 116 ft (35.4 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesAlisos Road
CrossesHappy Canyon Creek
Location0.13 MI S Happy Canyon RD
RouteCounty Highway 0
CountySanta Barbara County
StateCalifornia
Coordinates34.61563, -120.00147
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length116 ft (35.4 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic387 (2003)
Projected traffic197 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Alisos Road over Happy Canyon Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Alisos Road over Happy Canyon Creek 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 2024.

How much traffic does Alisos Road over Happy Canyon Creek carry?

About 387 vehicles per day (2003 count), of which roughly 7% are trucks.

How long is Alisos Road over Happy Canyon Creek?

The structure is 116 ft (35.4 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Alisos Road over Happy Canyon Creek?

It is owned by the County Highway Agency.