Structure E09211T0461-160 · Prince of Wales-Hyder County, AK

IRR BIA RTE 461 over Unnamed Creek

Carries IRR BIA RTE 461 over Unnamed Creek, 12.05 Miles East Of Hydab.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT70 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

70 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 girder bridge.

Built198244 years old
Length69.9 ft21.3 m
Daily traffic45counted 2021
Last inspectedJune 2023every 24 months

Location

StateAlaska
CountyPrince of Wales-Hyder
Location12.05 Miles East Of Hydab
CarriesIRR BIA RTE 461
CrossesUnnamed Creek
Coordinates55.28848, -132.62392

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length69.9 ft (21.3 m)
Max Span65.6 ft (20 m)
Deck Width18.0 ft (5.5 m)
Deck Area117.2 sq m
Main Spans1
Year Built1982

Traffic

Avg Daily Traffic45 (2021)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCode 61
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure NumberE09211T0461-160

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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