Structure 1238 · Prince of Wales-Hyder County, AK

Salmon River Road over Hyder Harbor Access

Carries Salmon River Road over Hyder Harbor Access, Mile Point 12.0.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructure9/9 · Excellent
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT766 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 9/9Substructure 8/9 · sets the rating

766 ft end to end, longest span 85 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 tee-beam bridge.

Built201313 years old
Length766.1 ft233.5 m
Daily traffic120counted 2020
Last inspectedJune 2023every 24 months

Location

StateAlaska
CountyPrince of Wales-Hyder
LocationMile Point 12.0
CarriesSalmon River Road
CrossesHyder Harbor Access
Coordinates55.90580, -130.01350

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length766.1 ft (233.5 m)
Max Span85.0 ft (25.9 m)
Deck Width25.3 ft (7.7 m)
Deck Area1798.0 sq m
Main Spans9
Year Built2013

Traffic

Avg Daily Traffic120 (2020)
Truck Traffic26%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1238

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.

Nearby Bridges