Structure 2063 · Anchorage County, AK

Anch Intl Airport over Aia Curbside Bridge

Carries Anch Intl Airport over Aia Curbside Bridge, Mile Point 0.1.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT741 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

741 ft end to end, longest span 60 ft: about 2.1 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 multi-beam bridge.

Built200026 years old
Length741.1 ft225.9 m
Daily traffic2,020counted 2020
Last inspectedAugust 2023every 24 months

Location

StateAlaska
CountyAnchorage
LocationMile Point 0.1
CarriesAnch Intl Airport
CrossesAia Curbside Bridge
Coordinates61.17556, -149.98222

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length741.1 ft (225.9 m)
Max Span60.0 ft (18.3 m)
Deck Width65.3 ft (19.9 m)
Deck Area4495.4 sq m
Main Spans21
Year Built2000

Traffic

Avg Daily Traffic2,020 (2020)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerOther State Agencies
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number2063

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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