US Bridges

Healy Road over Healy Overhead

Fair

Denali Borough, Alaska · Mile Point 1.5 · Structure no. 1190

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
121 ft
3 main spans
Daily traffic
720
2020 count
Owner
State
State Highway Agency

About this bridge

Healy Road over Healy Overhead is a steel stringer/multi-beam or girder carrying Healy Road over Healy Overhead in Denali Borough, Alaska. It was built in 1971, so it is 54 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 720 vehicles a day, roughly 10% of them trucks, projected to reach 2,490 by 2039. The structure is 121 ft (36.8 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesHealy Road
CrossesHealy Overhead
LocationMile Point 1.5
RouteState Highway 638
CountyDenali Borough
StateAlaska
Coordinates63.8747, -148.97839
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.8 m)
Longest span40 ft (12.2 m)
Deck width35 ft (10.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2020)
Projected traffic2,490 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Healy Road over Healy Overhead built?

It was built in 1971, making it 54 years old in 2025.

What condition is Healy Road over Healy Overhead 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 Healy Road over Healy Overhead carry?

About 720 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Healy Road over Healy Overhead?

The structure is 121 ft (36.8 m) long with a longest span of 40 ft (12.2 m) and a deck 35 ft wide.

Who owns Healy Road over Healy Overhead?

It is owned by the State Highway Agency.