US Bridges

IRR BIA RTE 1008 over Klawock Slough

Good

Prince of Wales-Hyder Census Area, Alaska · 0.21 MI W of Crg/Klwk Hw · Structure no. 000000001008-20

Built
2015
10 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
60
2021 count
Owner
Tribal
Indian Tribal Government

About this bridge

IRR BIA RTE 1008 over Klawock Slough is a steel stringer/multi-beam or girder carrying IRR BIA RTE 1008 over Klawock Slough in Prince of Wales-Hyder Census Area, Alaska. It was built in 2015, so it is 10 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 60 vehicles a day, projected to reach 120 by 2041. The structure is 100 ft (30.5 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIRR BIA RTE 1008
CrossesKlawock Slough
Location0.21 MI W of Crg/Klwk Hw
RouteFederal Lands Road 1008
StateAlaska
Coordinates55.54319, -133.10253
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourOver tidal waters; not evaluated
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span100 ft (30.5 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2021)
Projected traffic120 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerIndian Tribal Government
Maintained byIndian Tribal Government
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE 1008 over Klawock Slough built?

It was built in 2015, making it 10 years old in 2025.

What condition is IRR BIA RTE 1008 over Klawock Slough 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 June 2023.

How much traffic does IRR BIA RTE 1008 over Klawock Slough carry?

About 60 vehicles per day (2021 count).

How long is IRR BIA RTE 1008 over Klawock Slough?

The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 25 ft wide.

Who owns IRR BIA RTE 1008 over Klawock Slough?

It is owned by the Indian Tribal Government.