US Bridges

Fdr 6590 over Stream - Perm

Fair

Wrangell City and Borough, Alaska · Zarembo Island · Structure no. 100220000001221

Built
1983
42 years old, rebuilt 2007
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
61 ft
1 main span
Daily traffic
5
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 6590 over Stream - Perm is a wood or timber stringer/multi-beam or girder carrying Fdr 6590 over Stream - Perm in Wrangell City and Borough, Alaska. It was built in 1983 and reconstructed in 2007, so it is 42 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5 vehicles a day, projected to reach 7 by 2045. The structure is 61 ft (18.6 m) long and 17 ft wide. If it were closed, the detour would be 41.6 mi (67 km).

CarriesFdr 6590
CrossesStream - Perm
LocationZarembo Island
RouteFederal Lands Road 6590
StateAlaska
Coordinates56.43982, -132.80541
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating60.4 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length61 ft (18.6 m)
Longest span57 ft (17.5 m)
Deck width17 ft (5.1 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2006)
Projected traffic7 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed41.6 mi (67 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 6590 over Stream - Perm built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2007.

What condition is Fdr 6590 over Stream - Perm in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Fdr 6590 over Stream - Perm carry?

About 5 vehicles per day (2006 count).

How long is Fdr 6590 over Stream - Perm?

The structure is 61 ft (18.6 m) long with a longest span of 57 ft (17.5 m) and a deck 17 ft wide.

Who owns Fdr 6590 over Stream - Perm?

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