US Bridges

Logging Road over Stream

Fair

Petersburg Census Area, Alaska · Tonka · Structure no. 100521000024422

Built
2014
11 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
41 ft
1 main span
Daily traffic
10
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Logging Road over Stream is a wood or timber stringer/multi-beam or girder carrying Logging Road over Stream in Petersburg Census Area, Alaska. It was built in 2014, so it is 11 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 10 vehicles a day, projected to reach 15 by 2045. The structure is 41 ft (12.5 m) long and 24 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

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CarriesLogging Road
CrossesStream
LocationTonka
RouteFederal Lands Road 6352
CountyPetersburg Census Area
StateAlaska
Coordinates56.6879, -133.0754
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating64.6 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length41 ft (12.5 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.3 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic15 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 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 Logging Road over Stream built?

It was built in 2014, making it 11 years old in 2025.

What condition is Logging Road over Stream 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 September 2024.

How much traffic does Logging Road over Stream carry?

About 10 vehicles per day (2018 count).

How long is Logging Road over Stream?

The structure is 41 ft (12.5 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns Logging Road over Stream?

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