US Bridges

W.Airport Way-Dept over W.Airport Way-Arrival

Fair

Ada County, Idaho · At Boise Airport · Structure no. 000000000034000

Built
2004
21 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
1,003 ft
16 main spans
Daily traffic
4,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

W.Airport Way-Dept over W.Airport Way-Arrival is a concrete continuous box beam or girders - single or spread carrying W.Airport Way-Dept over W.Airport Way-Arrival in Ada County, Idaho. It was built in 2004, so it is 21 years old, younger than the Idaho average of 45.3 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 4,000 vehicles a day, roughly 10% of them trucks, projected to reach 6,000 by 2039. The structure is 1,003 ft (305.7 m) long and 69 ft wide.

Location

Open in Google Maps
CarriesW.Airport Way-Dept
CrossesW.Airport Way-Arrival
LocationAt Boise Airport
RouteCity Street 0
CountyAda County
StateIdaho
Coordinates43.56986, -116.22344
Functional classUrban 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.
Last inspectionNovember 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating32 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans16 (+2 approach)
Design loadHS 20
Structure length1,003 ft (305.7 m)
Longest span100 ft (30.5 m)
Deck width69 ft (21.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic6,000 by 2039
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.4 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W.Airport Way-Dept over W.Airport Way-Arrival built?

It was built in 2004, making it 21 years old in 2025.

What condition is W.Airport Way-Dept over W.Airport Way-Arrival 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 November 2024.

How much traffic does W.Airport Way-Dept over W.Airport Way-Arrival carry?

About 4,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is W.Airport Way-Dept over W.Airport Way-Arrival?

The structure is 1,003 ft (305.7 m) long with a longest span of 100 ft (30.5 m) and a deck 69 ft wide.

Who owns W.Airport Way-Dept over W.Airport Way-Arrival?

It is owned by the City or Municipal Highway Agency.