US Bridges

Alaska Highway over Sawmill Creek

Fair

Southeast Fairbanks Census Area, Alaska · Mile Point 179.6 · Structure no. 0521

Built
1995
30 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
139 ft
1 main span
Daily traffic
750
2020 count
Owner
State
State Highway Agency

About this bridge

Alaska Highway over Sawmill Creek is a prestressed concrete tee beam carrying Alaska Highway over Sawmill Creek in Southeast Fairbanks Census Area, Alaska. It was built in 1995, so it is 30 years old, younger 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 750 vehicles a day, roughly 21% of them trucks, projected to reach 1,290 by 2039. The structure is 139 ft (42.4 m) long and 39 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAlaska Highway
CrossesSawmill Creek
LocationMile Point 179.6
RouteInterstate 0A22
StateAlaska
Coordinates63.89899, -145.23284
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating81.9 US tons
Inventory rating50.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length139 ft (42.4 m)
Longest span138 ft (42.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2020)
Projected traffic1,290 by 2039
Trucks21%
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 Sawmill Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Alaska Highway over Sawmill 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 Sawmill Creek carry?

About 750 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is Alaska Highway over Sawmill Creek?

The structure is 139 ft (42.4 m) long with a longest span of 138 ft (42.1 m) and a deck 39 ft wide.

Who owns Alaska Highway over Sawmill Creek?

It is owned by the State Highway Agency.