Structure 1755 · Aleutians East County, AK

Marine HWY Route over Cold Bay Dock

Carries Marine HWY Route over Cold Bay Dock, Cold Bay.

Overall conditionPoor

Set by its lowest-rated component: Superstructure and Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,824 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 4/9 · sets the rating

1,824 ft end to end, longest span 24 ft: about 5.1 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 slab bridge.

Built198046 years old
Length1824.1 ft556 m
Daily traffic10counted 2018
Last inspectedAugust 2024every 24 months

Location

StateAlaska
CountyAleutians East
LocationCold Bay
CarriesMarine HWY Route
CrossesCold Bay Dock
Coordinates55.20734, -162.69592

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length1824.1 ft (556 m)
Max Span24.0 ft (7.3 m)
Deck Width12.1 ft (3.7 m)
Deck Area2057.2 sq m
Main Spans4
Year Built1980

Traffic

Avg Daily Traffic10 (2018)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number1755

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.