US Bridges

Kasaan Road over Loon Creek

Good

Prince of Wales-Hyder Census Area, Alaska · Mile Point 8.0 · Structure no. 1184

Built
1996
29 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
70
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Kasaan Road over Loon Creek is a steel stringer/multi-beam or girder carrying Kasaan Road over Loon Creek in Prince of Wales-Hyder Census Area, Alaska. It was built in 1996, so it is 29 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 70 vehicles a day, roughly 7% of them trucks, projected to reach 100 by 2035. The structure is 40 ft (12.2 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesKasaan Road
CrossesLoon Creek
LocationMile Point 8.0
StateAlaska
Coordinates55.63167, -132.48778
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.2 US tons
Inventory rating63.1 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 25 or greater
Structure length40 ft (12.2 m)
Longest span31 ft (9.4 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2018)
Projected traffic100 by 2035
Trucks7%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Kasaan Road over Loon Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Kasaan Road over Loon Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Kasaan Road over Loon Creek carry?

About 70 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Kasaan Road over Loon Creek?

The structure is 40 ft (12.2 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns Kasaan Road over Loon Creek?

It is owned by the City or Municipal Highway Agency.