US Bridges

Fdr 6590 over Stream - Perm

Good

Wrangell City and Borough, Alaska · Zarembo Island · Structure no. 100220000001237

Built
1992
33 years old
Condition
Good
inspected August 2024
Type
Channel Beam
Prestressed Concrete
Length
50 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 prestressed concrete channel beam carrying Fdr 6590 over Stream - Perm in Wrangell City and Borough, Alaska. It was built in 1992, so it is 33 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 5 vehicles a day, projected to reach 7 by 2045. The structure is 50 ft (15.2 m) long and 18 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
Coordinates56.41635, -132.63518
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 on dry land well above flood water elevations
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating77.5 US tons
Inventory rating60 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 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 1992, making it 33 years old in 2025.

What condition is Fdr 6590 over Stream - 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 Fdr 6590 over Stream - Perm carry?

About 5 vehicles per day (2006 count).

How long is Fdr 6590 over Stream - Perm?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 18 ft wide.

Who owns Fdr 6590 over Stream - Perm?

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