US Bridges

25-0.296 over Perm

Good

Prince of Wales-Hyder Census Area, Alaska · Whale Pass · Structure no. 100540000001230

Built
1996
29 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
81 ft
1 main span
Daily traffic
50
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

25-0.296 over Perm is a wood or timber stringer/multi-beam or girder carrying 25-0.296 over Perm 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 81 ft (24.7 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Carries25-0.296
CrossesPerm
LocationWhale Pass
RouteFederal Lands Road 25000
StateAlaska
Coordinates56.09035, -133.19972
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length81 ft (24.7 m)
Longest span77 ft (23.5 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2006)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$220,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 25-0.296 over Perm built?

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

What condition is 25-0.296 over Perm 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 October 2024.

How much traffic does 25-0.296 over Perm carry?

About 50 vehicles per day (2006 count).

How long is 25-0.296 over Perm?

The structure is 81 ft (24.7 m) long with a longest span of 77 ft (23.5 m) and a deck 16 ft wide.

Who owns 25-0.296 over Perm?

It is owned by the U.S. Forest Service.