US Bridges

Irr:keku RD (kake) over Slo Duc Creek

Fair

Petersburg Census Area, Alaska · Mile Point 6.7 · Structure no. 1468

Built
2008
17 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
40
2020 count
Owner
State
State Highway Agency

About this bridge

Irr:keku RD (kake) over Slo Duc Creek is a prestressed concrete tee beam carrying Irr:keku RD (kake) over Slo Duc Creek in Petersburg Census Area, Alaska. It was built in 2008, so it is 17 years old, younger 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 40 vehicles a day, roughly 4% of them trucks, projected to reach 90 by 2039. The structure is 84 ft (25.6 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesIrr:keku RD (kake)
CrossesSlo Duc Creek
LocationMile Point 6.7
RouteState Highway 0
CountyPetersburg Census Area
StateAlaska
Coordinates56.9232, -133.8206
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating90.1 US tons
Inventory rating54.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length84 ft (25.6 m)
Longest span79 ft (24 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2020)
Projected traffic90 by 2039
Trucks4%
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

OwnerState Highway Agency
Maintained byState Highway Agency
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:keku RD (kake) over Slo Duc Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Irr:keku RD (kake) over Slo Duc Creek 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 May 2023.

How much traffic does Irr:keku RD (kake) over Slo Duc Creek carry?

About 40 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Irr:keku RD (kake) over Slo Duc Creek?

The structure is 84 ft (25.6 m) long with a longest span of 79 ft (24 m) and a deck 33 ft wide.

Who owns Irr:keku RD (kake) over Slo Duc Creek?

It is owned by the State Highway Agency.