Structure 100220000001168 · Wrangell City and County, AK

Fdr 3270 over Stream - Perm

Carries Fdr 3270 over Stream - Perm, Wrangell Island.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

51 ft end to end. Lengths and the car 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.

Built198244 years old
Length50.9 ft15.5 m
Daily traffic10counted 2006
Last inspectedJune 2024every 24 months

Location

StateAlaska
CountyWrangell City and
LocationWrangell Island
CarriesFdr 3270
CrossesStream - Perm
Coordinates56.29289, -132.14343

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length50.9 ft (15.5 m)
Max Span47.2 ft (14.4 m)
Deck Width18.7 ft (5.7 m)
Deck Area88.3 sq m
Main Spans1
Year Built1982

Traffic

Avg Daily Traffic10 (2006)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number100220000001168

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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