US Bridges

Near Island Road over Kodiak Harbor Channel

Good

Kodiak Island Borough, Alaska · Mile Point 0.1 · Structure no. 1189

Built
1986
39 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,258 ft
4 main spans
Daily traffic
1,970
2020 count
Owner
State
State Highway Agency

About this bridge

Near Island Road over Kodiak Harbor Channel is a steel continuous stringer/multi-beam or girder carrying Near Island Road over Kodiak Harbor Channel in Kodiak Island 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 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 1,970 vehicles a day, roughly 8% of them trucks, projected to reach 5,290 by 2039. The structure is 1,258 ft (383.3 m) long and 48 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNear Island Road
CrossesKodiak Harbor Channel
LocationMile Point 0.1
RouteCounty Highway 0NSP
StateAlaska
Coordinates57.7887, -152.39737
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating50.2 US tons
Inventory rating30.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length1,258 ft (383.3 m)
Longest span390 ft (118.9 m)
Deck width48 ft (14.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,970 (2020)
Projected traffic5,290 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed123.7 mi (199 km)
TollOn a free 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Near Island Road over Kodiak Harbor Channel built?

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

What condition is Near Island Road over Kodiak Harbor Channel 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 September 2024.

How much traffic does Near Island Road over Kodiak Harbor Channel carry?

About 1,970 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Near Island Road over Kodiak Harbor Channel?

The structure is 1,258 ft (383.3 m) long with a longest span of 390 ft (118.9 m) and a deck 48 ft wide.

Who owns Near Island Road over Kodiak Harbor Channel?

It is owned by the State Highway Agency.