US Bridges

Marine HWY Route over Ketchikan Berth II

FairPosted for load

Ketchikan Gateway Borough, Alaska · Ketchikan · Structure no. 1823

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Steel
Length
168 ft
1 main span
Daily traffic
250
2018 count
Owner
State
State Highway Agency

About this bridge

Marine HWY Route over Ketchikan Berth II is a steel box beam or girders - multiple carrying Marine HWY Route over Ketchikan Berth II in Ketchikan Gateway Borough, Alaska. It was built in 1986, so it is 39 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 25% of them trucks, projected to reach 260 by 2035. The structure is 168 ft (51.2 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMarine HWY Route
CrossesKetchikan Berth II
LocationKetchikan
RouteState Highway 902
CountyKetchikan Gateway Borough
StateAlaska
Coordinates55.35493, -131.69607
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.5 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 width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2018)
Projected traffic260 by 2035
Trucks25%
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 SystemNo

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 Ketchikan Berth II built?

It was built in 1986, making it 39 years old in 2025.

What condition is Marine HWY Route over Ketchikan Berth II 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 Ketchikan Berth II carry?

About 250 vehicles per day (2018 count), of which roughly 25% are trucks.

How long is Marine HWY Route over Ketchikan Berth II?

The structure is 168 ft (51.2 m) long with a longest span of 140 ft (42.7 m) and a deck 16 ft wide.

Who owns Marine HWY Route over Ketchikan Berth II?

It is owned by the State Highway Agency.