US Bridges

Alaska Highway over Chief Creek

Fair

Southeast Fairbanks Census Area, Alaska · Mile Point 134.6 · Structure no. 0514

Built
1985
40 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
190
2020 count
Owner
State
State Highway Agency

About this bridge

Alaska Highway over Chief Creek is a prestressed concrete tee beam carrying Alaska Highway over Chief Creek in Southeast Fairbanks Census Area, Alaska. It was built in 1985, so it is 40 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.

It carries about 190 vehicles a day, roughly 26% of them trucks, projected to reach 260 by 2039. The structure is 41 ft (12.5 m) long and 37 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAlaska Highway
CrossesChief Creek
LocationMile Point 134.6
RouteInterstate 0A21
StateAlaska
Coordinates63.6307, -144.0137
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo 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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.5 US tons
Inventory rating42.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2020)
Projected traffic260 by 2039
Trucks26%
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 Chief Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Alaska Highway over Chief Creek 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 July 2024.

How much traffic does Alaska Highway over Chief Creek carry?

About 190 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is Alaska Highway over Chief Creek?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.

Who owns Alaska Highway over Chief Creek?

It is owned by the State Highway Agency.