US Bridges

2100000-17.53 over Perm

Good

Prince of Wales-Hyder Census Area, Alaska · Polk · Structure no. 100510000001053

Built
1985
40 years old, rebuilt 2004
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
91 ft
1 main span
Daily traffic
10
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

2100000-17.53 over Perm is a wood or timber stringer/multi-beam or girder carrying 2100000-17.53 over Perm in Prince of Wales-Hyder Census Area, Alaska. It was built in 1985 and reconstructed in 2004, so it is 40 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 20 by 2013. The structure is 91 ft (27.7 m) long and 17 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Carries2100000-17.53
CrossesPerm
LocationPolk
RouteFederal Lands Road 21000
StateAlaska
Coordinates55.34695, -132.50729
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 protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating62.5 US tons
Inventory rating47.8 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length91 ft (27.7 m)
Longest span86 ft (26.2 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2006)
Projected traffic20 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$220,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 2100000-17.53 over Perm built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2004.

What condition is 2100000-17.53 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 May 2024.

How much traffic does 2100000-17.53 over Perm carry?

About 10 vehicles per day (2006 count).

How long is 2100000-17.53 over Perm?

The structure is 91 ft (27.7 m) long with a longest span of 86 ft (26.2 m) and a deck 17 ft wide.

Who owns 2100000-17.53 over Perm?

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