US Bridges

Irr:northway Road over Moose Creek

Good

Southeast Fairbanks Census Area, Alaska · Mile Point 5.5 · Structure no. 1365

Built
2002
23 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
170
2020 count
Owner
State
State Highway Agency

About this bridge

Irr:northway Road over Moose Creek is a prestressed concrete tee beam carrying Irr:northway Road over Moose Creek in Southeast Fairbanks Census Area, Alaska. It was built in 2002, so it is 23 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 170 vehicles a day, roughly 6% of them trucks, projected to reach 210 by 2039. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIrr:northway Road
CrossesMoose Creek
LocationMile Point 5.5
RouteState Highway 791
StateAlaska
Coordinates62.96852, -141.90403
Functional classRural Major 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.
Superstructure9 ExcellentNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating66.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length80 ft (24.4 m)
Longest span77 ft (23.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2020)
Projected traffic210 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Irr:northway Road over Moose Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Irr:northway Road over Moose Creek 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 Irr:northway Road over Moose Creek carry?

About 170 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Irr:northway Road over Moose Creek?

The structure is 80 ft (24.4 m) long with a longest span of 77 ft (23.5 m) and a deck 27 ft wide.

Who owns Irr:northway Road over Moose Creek?

It is owned by the State Highway Agency.