US Bridges

Parks Highway over Nenana River Park Sta

Fair

Denali Borough, Alaska · Mile Point 202.4 · Structure no. 1147

Built
1970
55 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
500 ft
4 main spans
Daily traffic
2,340
2020 count
Owner
State
State Highway Agency

About this bridge

Parks Highway over Nenana River Park Sta is a steel continuous stringer/multi-beam or girder carrying Parks Highway over Nenana River Park Sta 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 2,340 vehicles a day, roughly 26% of them trucks, projected to reach 3,130 by 2039. The structure is 500 ft (152.4 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesParks Highway
CrossesNenana River Park Sta
LocationMile Point 202.4
RouteInterstate 0A44
StateAlaska
Coordinates63.73741, -148.88669
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.8 US tons
Inventory rating42.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span140 ft (42.7 m)
Deck width34 ft (10.4 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,340 (2020)
Projected traffic3,130 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 Parks Highway over Nenana River Park Sta built?

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

What condition is Parks Highway over Nenana River Park Sta 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 Park Sta carry?

About 2,340 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is Parks Highway over Nenana River Park Sta?

The structure is 500 ft (152.4 m) long with a longest span of 140 ft (42.7 m) and a deck 34 ft wide.

Who owns Parks Highway over Nenana River Park Sta?

It is owned by the State Highway Agency.