US Bridges

3000000-85.912 over Perm

Good

Prince of Wales-Hyder Census Area, Alaska · Whale Pass · Structure no. 100540000001084

Built
1987
38 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
81 ft
1 main span
Daily traffic
10
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

3000000-85.912 over Perm is a wood or timber stringer/multi-beam or girder carrying 3000000-85.912 over Perm in Prince of Wales-Hyder Census Area, Alaska. It was built in 1987, so it is 38 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.

It carries about 10 vehicles a day, projected to reach 110 by 2013. 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).

Carries3000000-85.912
CrossesPerm
LocationWhale Pass
RouteFederal Lands Road 30000
StateAlaska
Coordinates56.16974, -133.10398
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating47.2 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length81 ft (24.7 m)
Longest span76 ft (23.2 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2006)
Projected traffic110 by 2013
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$200,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 3000000-85.912 over Perm built?

It was built in 1987, making it 38 years old in 2025.

What condition is 3000000-85.912 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 November 2024.

How much traffic does 3000000-85.912 over Perm carry?

About 10 vehicles per day (2006 count).

How long is 3000000-85.912 over Perm?

The structure is 81 ft (24.7 m) long with a longest span of 76 ft (23.2 m) and a deck 16 ft wide.

Who owns 3000000-85.912 over Perm?

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