Structure 34000 · Ada County, ID

W.airport Way-dept over W.airport Way-arrival

Carries W.airport Way-dept over W.airport Way-arrival, At Boise Airport.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,003 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

1,003 ft end to end, longest span 100 ft: about 2.8 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built200422 years old
Length1003.0 ft305.7 m
Daily traffic4,000counted 2023
Last inspectedNovember 2024every 24 months

Location

StateIdaho
CountyAda
LocationAt Boise Airport
CarriesW.airport Way-dept
CrossesW.airport Way-arrival
Coordinates43.56986, -116.22344

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length1003.0 ft (305.7 m)
Max Span100.1 ft (30.5 m)
Deck Width69.2 ft (21.1 m)
Deck Area6450.3 sq m
Main Spans16
Year Built2004

Traffic

Avg Daily Traffic4,000 (2023)
Truck Traffic10%
Lanes On Bridge3
Lanes Under Bridge3

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000034000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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