US Bridges

Airport Blvd over US Highway 101

Fair

Sonoma County, California · 04-SON-101-26.30 · Structure no. 20 0297

Built
2014
11 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
330 ft
2 main spans
Daily traffic
5,000
2014 count
Owner
State
State Highway Agency

About this bridge

Airport Blvd over US Highway 101 is a prestressed concrete continuous box beam or girders - multiple carrying Airport Blvd over US Highway 101 in Sonoma County, California. It was built in 2014, so it is 11 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 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 5,000 vehicles a day, roughly 3% of them trucks, projected to reach 6,141 by 2046. The structure is 330 ft (100.6 m) long and 84 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesAirport Blvd
CrossesUS Highway 101
Location04-SON-101-26.30
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.51138, -122.77608
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length330 ft (100.6 m)
Longest span165 ft (50.3 m)
Deck width84 ft (25.5 m)
Roadway width76 ft (23.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2014)
Projected traffic6,141 by 2046
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 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 Airport Blvd over US Highway 101 built?

It was built in 2014, making it 11 years old in 2025.

What condition is Airport Blvd over US Highway 101 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 August 2024.

How much traffic does Airport Blvd over US Highway 101 carry?

About 5,000 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is Airport Blvd over US Highway 101?

The structure is 330 ft (100.6 m) long with a longest span of 165 ft (50.3 m) and a deck 84 ft wide.

Who owns Airport Blvd over US Highway 101?

It is owned by the State Highway Agency.