US Bridges

State Route 154 over US HWY 101 (@pm 18.36)

Fair

Santa Barbara County, California · 05-SB-154-32.27 · Structure no. 51 0308

Built
1998
27 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
200 ft
2 main spans
Daily traffic
17,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 154 over US HWY 101 (@pm 18.36) is a concrete continuous box beam or girders - multiple carrying State Route 154 over US HWY 101 (@pm 18.36) in Santa Barbara County, California. It was built in 1998, so it is 27 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 17,000 vehicles a day, roughly 2% of them trucks, projected to reach 24,337 by 2043. The structure is 200 ft (61 m) long and 95 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 154
CrossesUS HWY 101 (@pm 18.36)
Location05-SB-154-32.27
RouteState Highway 154
CountySanta Barbara County
StateCalifornia
Coordinates34.44094, -119.7599
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionSeptember 2023
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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span97 ft (29.6 m)
Deck width95 ft (29 m)
Roadway width88 ft (26.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,000 (2009)
Projected traffic24,337 by 2043
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 154 over US HWY 101 (@pm 18.36) built?

It was built in 1998, making it 27 years old in 2025.

What condition is State Route 154 over US HWY 101 (@pm 18.36) 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 September 2023.

How much traffic does State Route 154 over US HWY 101 (@pm 18.36) carry?

About 17,000 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is State Route 154 over US HWY 101 (@pm 18.36)?

The structure is 200 ft (61 m) long with a longest span of 97 ft (29.6 m) and a deck 95 ft wide.

Who owns State Route 154 over US HWY 101 (@pm 18.36)?

It is owned by the State Highway Agency.