US Bridges

US Highway 101 NB over Chiquita Road

Fair

Sonoma County, California · 04-SON-101-36.95 · Structure no. 20 0146R

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
140 ft
3 main spans
Daily traffic
22,750
2015 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over Chiquita Road is a concrete continuous tee beam carrying US Highway 101 NB over Chiquita Road in Sonoma County, California. It was built in 1960, so it is 65 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 22,750 vehicles a day, roughly 13% of them trucks, projected to reach 44,023 by 2045. The structure is 140 ft (42.7 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS Highway 101 NB
CrossesChiquita Road
Location04-SON-101-36.95
RouteU.S. Route 101
Coordinates38.6358, -122.87739
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span62 ft (18.9 m)
Deck width42 ft (12.8 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,750 (2015)
Projected traffic44,023 by 2045
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 Chiquita Road built?

It was built in 1960, making it 65 years old in 2025.

What condition is US Highway 101 NB over Chiquita Road 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 April 2023.

How much traffic does US Highway 101 NB over Chiquita Road carry?

About 22,750 vehicles per day (2015 count), of which roughly 13% are trucks.

How long is US Highway 101 NB over Chiquita Road?

The structure is 140 ft (42.7 m) long with a longest span of 62 ft (18.9 m) and a deck 42 ft wide.

Who owns US Highway 101 NB over Chiquita Road?

It is owned by the State Highway Agency.