US Bridges

State Route 1 NB over Gaviota Creek

Fair

Santa Barbara County, California · 05-SB-001-R0.16 · Structure no. 51 0240R

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
186 ft
2 main spans
Daily traffic
3,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 NB over Gaviota Creek is a concrete continuous box beam or girders - multiple carrying State Route 1 NB over Gaviota Creek in Santa Barbara County, California. It was built in 1967, 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 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 3,500 vehicles a day, roughly 10% of them trucks, projected to reach 12,720 by 2041. The structure is 186 ft (56.7 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesState Route 1 NB
CrossesGaviota Creek
Location05-SB-001-R0.16
RouteState Highway 1
CountySanta Barbara County
StateCalifornia
Coordinates34.51073, -120.22804
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 48 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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.9 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length186 ft (56.7 m)
Longest span97 ft (29.6 m)
Deck width47 ft (14.2 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2009)
Projected traffic12,720 by 2041
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 1 NB over Gaviota Creek built?

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

What condition is State Route 1 NB over Gaviota 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 July 2023.

How much traffic does State Route 1 NB over Gaviota Creek carry?

About 3,500 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is State Route 1 NB over Gaviota Creek?

The structure is 186 ft (56.7 m) long with a longest span of 97 ft (29.6 m) and a deck 47 ft wide.

Who owns State Route 1 NB over Gaviota Creek?

It is owned by the State Highway Agency.