Structure 1269 · Anchorage County, AK

Intl Airport RD over Minnesota DR Interchange

Carries Intl Airport RD over Minnesota DR Interchange, Mile Point 1.7.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT290 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

290 ft end to end, longest span 144 ft: about 4 semi-trucks nose to tail. 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 tee-beam bridge.

Built199927 years old
Length290.0 ft88.4 m
Daily traffic12,800counted 2020
Last inspectedAugust 2023every 24 months

Location

StateAlaska
CountyAnchorage
LocationMile Point 1.7
CarriesIntl Airport RD
CrossesMinnesota DR Interchange
Coordinates61.17250, -149.91694

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length290.0 ft (88.4 m)
Max Span144.0 ft (43.9 m)
Deck Width112.5 ft (34.3 m)
Deck Area3032.1 sq m
Main Spans2
Year Built1999

Traffic

Avg Daily Traffic12,800 (2020)
Truck Traffic5%
Lanes On Bridge6
Lanes Under Bridge9

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1269

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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