US Bridges

Parks Highway over Nenana River at Moody

Fair

Denali Borough, Alaska · Mile Point 207.3 · Structure no. 1143

Built
1970
55 years old
Condition
Fair
inspected July 2024
Type
Truss - Deck
Steel
Length
891 ft
3 main spans
Daily traffic
1,380
2020 count
Owner
State
State Highway Agency

About this bridge

Parks Highway over Nenana River at Moody is a steel truss - deck carrying Parks Highway over Nenana River at Moody in Denali Borough, Alaska. It was built in 1970, so it is 55 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 1,380 vehicles a day, roughly 7% of them trucks, projected to reach 2,100 by 2039. The structure is 891 ft (271.6 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesParks Highway
CrossesNenana River at Moody
LocationMile Point 207.3
RouteInterstate 0A44
StateAlaska
Coordinates63.80268, -148.93295
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.4 US tons
Inventory rating30.3 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length891 ft (271.6 m)
Longest span315 ft (96 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,380 (2020)
Projected traffic2,100 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
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 Parks Highway over Nenana River at Moody built?

It was built in 1970, making it 55 years old in 2025.

What condition is Parks Highway over Nenana River at Moody 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 Parks Highway over Nenana River at Moody carry?

About 1,380 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Parks Highway over Nenana River at Moody?

The structure is 891 ft (271.6 m) long with a longest span of 315 ft (96 m) and a deck 34 ft wide.

Who owns Parks Highway over Nenana River at Moody?

It is owned by the State Highway Agency.