US Bridges

Marine HWY Route over Kodiak City Dock

Good

Kodiak Island Borough, Alaska · Kodiak · Structure no. 1425

Built
2016
9 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
230 ft
2 main spans
Daily traffic
216
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marine HWY Route over Kodiak City Dock is a prestressed concrete slab carrying Marine HWY Route over Kodiak City Dock in Kodiak Island Borough, Alaska. It was built in 2016, so it is 9 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 216 vehicles a day, roughly 6% of them trucks, projected to reach 250 by 2035. The structure is 230 ft (70.1 m) long and 75 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMarine HWY Route
CrossesKodiak City Dock
LocationKodiak
RouteState Highway 389
StateAlaska
Coordinates57.78719, -152.40254
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2 (+4 approach)
Design loadHL 93
Structure length230 ft (70.1 m)
Longest span21 ft (6.4 m)
Deck width75 ft (22.9 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic216 (2018)
Projected traffic250 by 2035
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Kodiak City Dock built?

It was built in 2016, making it 9 years old in 2025.

What condition is Marine HWY Route over Kodiak City Dock in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Marine HWY Route over Kodiak City Dock carry?

About 216 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Marine HWY Route over Kodiak City Dock?

The structure is 230 ft (70.1 m) long with a longest span of 21 ft (6.4 m) and a deck 75 ft wide.

Who owns Marine HWY Route over Kodiak City Dock?

It is owned by the City or Municipal Highway Agency.