US Bridges

Marine HWY Route over Auke Bay F.T. - West

Fair

Juneau City and Borough, Alaska · Auke Bay · Structure no. 0803

Built
1989
36 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Steel
Length
168 ft
1 main span
Daily traffic
45
2018 count
Owner
State
State Highway Agency

About this bridge

Marine HWY Route over Auke Bay F.T. - West is a steel box beam or girders - multiple carrying Marine HWY Route over Auke Bay F.T. - West in Juneau City and Borough, Alaska. It was built in 1989, so it is 36 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 45 vehicles a day, roughly 26% of them trucks, projected to reach 100 by 2035. The structure is 168 ft (51.2 m) long and 17 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMarine HWY Route
CrossesAuke Bay F.T. - West
LocationAuke Bay
RouteState Highway 93
CountyJuneau City and Borough
StateAlaska
Coordinates58.38164, -134.68827
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span140 ft (42.7 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2018)
Projected traffic100 by 2035
Trucks26%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Marine HWY Route over Auke Bay F.T. - West built?

It was built in 1989, making it 36 years old in 2025.

What condition is Marine HWY Route over Auke Bay F.T. - West in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does Marine HWY Route over Auke Bay F.T. - West carry?

About 45 vehicles per day (2018 count), of which roughly 26% are trucks.

How long is Marine HWY Route over Auke Bay F.T. - West?

The structure is 168 ft (51.2 m) long with a longest span of 140 ft (42.7 m) and a deck 17 ft wide.

Who owns Marine HWY Route over Auke Bay F.T. - West?

It is owned by the State Highway Agency.