US Bridges

Alaska Highway over Tok River

Good

Southeast Fairbanks Census Area, Alaska · Mile Point 85.2 · Structure no. 0506

Built
2019
6 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
360 ft
3 main spans
Daily traffic
400
2020 count
Owner
State
State Highway Agency

About this bridge

Alaska Highway over Tok River is a prestressed concrete tee beam carrying Alaska Highway over Tok River in Southeast Fairbanks Census Area, Alaska. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 400 vehicles a day, roughly 22% of them trucks, projected to reach 650 by 2039. The structure is 360 ft (109.7 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAlaska Highway
CrossesTok River
LocationMile Point 85.2
RouteInterstate 0A11
StateAlaska
Coordinates63.32499, -142.83609
Functional classRural Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating92.7 US tons
Inventory rating55.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHL 93
Structure length360 ft (109.7 m)
Longest span120 ft (36.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic650 by 2039
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Alaska Highway over Tok River built?

It was built in 2019, making it 6 years old in 2025.

What condition is Alaska Highway over Tok River 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 July 2024.

How much traffic does Alaska Highway over Tok River carry?

About 400 vehicles per day (2020 count), of which roughly 22% are trucks.

How long is Alaska Highway over Tok River?

The structure is 360 ft (109.7 m) long with a longest span of 120 ft (36.6 m) and a deck 43 ft wide.

Who owns Alaska Highway over Tok River?

It is owned by the State Highway Agency.