US Bridges

3030100-1.04 over Perm

Good

Prince of Wales-Hyder Census Area, Alaska · Ratz · Structure no. 100540000001115

Built
1987
38 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
10
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

3030100-1.04 over Perm is a steel stringer/multi-beam or girder carrying 3030100-1.04 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 5 by 2013. The structure is 90 ft (27.4 m) long and 18 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
Carries3030100-1.04
CrossesPerm
LocationRatz
RouteFederal Lands Road 30301
CountyPrince of Wales-Hyder Census Area
StateAlaska
Coordinates55.9547, -132.75048
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 inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length90 ft (27.4 m)
Longest span89 ft (27 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic5 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 3030100-1.04 over Perm built?

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

What condition is 3030100-1.04 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 August 2024.

How much traffic does 3030100-1.04 over Perm carry?

About 10 vehicles per day (2018 count).

How long is 3030100-1.04 over Perm?

The structure is 90 ft (27.4 m) long with a longest span of 89 ft (27 m) and a deck 18 ft wide.

Who owns 3030100-1.04 over Perm?

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