US Bridges

Irr:airport Road over Perryville Creek

GoodPosted for load

Lake and Peninsula Borough, Alaska · Perryville · Structure no. 1512

Built
1981
44 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
50 ft
1 main span
Daily traffic
77
2018 count
Owner
State
State Highway Agency

About this bridge

Irr:airport Road over Perryville Creek is a wood or timber stringer/multi-beam or girder carrying Irr:airport Road over Perryville Creek in Lake and Peninsula Borough, Alaska. It was built in 1981, so it is 44 years old, older 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. Its operating status is: posted for load restriction.

It carries about 77 vehicles a day, roughly 1% of them trucks, projected to reach 100 by 2035. The structure is 50 ft (15.2 m) long and 15 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIrr:airport Road
CrossesPerryville Creek
LocationPerryville
StateAlaska
Coordinates55.91164, -159.14919
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment6: Equal to present minimum criteria
Operating rating43.1 US tons
Inventory rating18.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2018)
Projected traffic100 by 2035
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byTown or Township 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 Perryville Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Irr:airport Road over Perryville 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 September 2024.

How much traffic does Irr:airport Road over Perryville Creek carry?

About 77 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Irr:airport Road over Perryville Creek?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 15 ft wide.

Who owns Irr:airport Road over Perryville Creek?

It is owned by the State Highway Agency and maintained by the Town or Township Highway Agency.