Structure 1451 · Hoonah-Angoon County, AK

Marine HWY Route over Tenakee City Dock

Carries Marine HWY Route over Tenakee City Dock, Tenakee.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT282 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 6/9 · sets the rating

282 ft end to end, longest span 24 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 slab bridge.

Built197749 years old
Length282.2 ft86 m
Daily traffic10counted 2018
Last inspectedJuly 2023every 24 months

Location

StateAlaska
CountyHoonah-Angoon
LocationTenakee
CarriesMarine HWY Route
CrossesTenakee City Dock
Coordinates57.77921, -135.21949

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length282.2 ft (86 m)
Max Span24.0 ft (7.3 m)
Deck Width12.1 ft (3.7 m)
Deck Area318.2 sq m
Main Spans12
Year Built1977

Traffic

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

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1451

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