US Bridges

Denali Park Road over Ghiglione Creek

Fair

Yukon-Koyukuk Census Area, Alaska · 40.19 Miles West of Ak Ro · Structure no. 9830011P0000000

Built
1960
65 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
139 ft
3 main spans
Daily traffic
300
2013 count
Owner
Federal
National Park Service

About this bridge

Denali Park Road over Ghiglione Creek is a steel stringer/multi-beam or girder carrying Denali Park Road over Ghiglione Creek in Yukon-Koyukuk Census Area, Alaska. It was built in 1960, so it is 65 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 5 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 300 vehicles a day, roughly 1% of them trucks, projected to reach 500 by 2033. The structure is 139 ft (42.4 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesDenali Park Road
CrossesGhiglione Creek
Location40.19 Miles West of Ak Ro
RouteFederal Lands Road 0
StateAlaska
Coordinates63.55647, -149.75386
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29 US tons
Inventory rating20 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length139 ft (42.4 m)
Longest span45 ft (13.7 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2013)
Projected traffic500 by 2033
Trucks1%
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

OwnerNational Park Service
Maintained byNational Park Service
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 Denali Park Road over Ghiglione Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Denali Park Road over Ghiglione 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 August 2023.

How much traffic does Denali Park Road over Ghiglione Creek carry?

About 300 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Denali Park Road over Ghiglione Creek?

The structure is 139 ft (42.4 m) long with a longest span of 45 ft (13.7 m) and a deck 32 ft wide.

Who owns Denali Park Road over Ghiglione Creek?

It is owned by the National Park Service.