US Bridges

Irr:airport Road over Hoonah Ferry Terminal

Good

Hoonah-Angoon Census Area, Alaska · Hoonah · Structure no. 0179

Built
2011
14 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
133 ft
1 main span
Daily traffic
45
2018 count
Owner
State
State Highway Agency

About this bridge

Irr:airport Road over Hoonah Ferry Terminal is a steel stringer/multi-beam or girder carrying Irr:airport Road over Hoonah Ferry Terminal in Hoonah-Angoon Census Area, Alaska. It was built in 2011, so it is 14 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 45 vehicles a day, roughly 7% of them trucks, projected to reach 110 by 2035. The structure is 133 ft (40.5 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesIrr:airport Road
CrossesHoonah Ferry Terminal
LocationHoonah
RouteState Highway 918
CountyHoonah-Angoon Census Area
StateAlaska
Coordinates58.11665, -135.45756
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.1 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1
Design loadHL 93
Structure length133 ft (40.5 m)
Longest span131 ft (39.9 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2018)
Projected traffic110 by 2035
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a toll 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Irr:airport Road over Hoonah Ferry Terminal built?

It was built in 2011, making it 14 years old in 2025.

What condition is Irr:airport Road over Hoonah Ferry Terminal 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 April 2023.

How much traffic does Irr:airport Road over Hoonah Ferry Terminal carry?

About 45 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Irr:airport Road over Hoonah Ferry Terminal?

The structure is 133 ft (40.5 m) long with a longest span of 131 ft (39.9 m) and a deck 17 ft wide.

Who owns Irr:airport Road over Hoonah Ferry Terminal?

It is owned by the State Highway Agency.