US Bridges

Klondike Highway over Skagway River

FairPosted for load

Skagway Municipality, Alaska · Mile Point 1.8 · Structure no. 0308

Built
1974
51 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
482 ft
6 main spans
Daily traffic
1,200
2020 count
Owner
State
State Highway Agency

About this bridge

Klondike Highway over Skagway River is a steel stringer/multi-beam or girder carrying Klondike Highway over Skagway River in Skagway Municipality, Alaska. It was built in 1974, so it is 51 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. Its operating status is: posted for other load-capacity restriction.

It carries about 1,200 vehicles a day, roughly 18% of them trucks, projected to reach 1,400 by 2039. The structure is 482 ft (146.9 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesKlondike Highway
CrossesSkagway River
LocationMile Point 1.8
RouteState Highway 97
StateAlaska
Coordinates59.46814, -135.30171
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating32.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length482 ft (146.9 m)
Longest span80 ft (24.4 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2020)
Projected traffic1,400 by 2039
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

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 Klondike Highway over Skagway River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Klondike Highway over Skagway River 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 May 2024.

How much traffic does Klondike Highway over Skagway River carry?

About 1,200 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is Klondike Highway over Skagway River?

The structure is 482 ft (146.9 m) long with a longest span of 80 ft (24.4 m) and a deck 30 ft wide.

Who owns Klondike Highway over Skagway River?

It is owned by the State Highway Agency.