US Bridges

Logging Road over N Fork White Rock Creek

Good

Sitka City and Borough, Alaska · False Island · Structure no. 100310000001431

Built
1975
50 years old
Condition
Good
inspected September 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
—
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Logging Road over N Fork White Rock Creek is a steel stringer/multi-beam or girder carrying Logging Road over N Fork White Rock Creek in Sitka City and Borough, Alaska. It was built in 1975, so it is 50 years old, older 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.

No traffic count is recorded. The structure is 60 ft (18.3 m) long and 18 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesLogging Road
CrossesN Fork White Rock Creek
LocationFalse Island
RouteFederal Lands Road 7548
StateAlaska
Coordinates57.54314, -134.93378
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length60 ft (18.3 m)
Longest span58 ft (17.8 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 N Fork White Rock Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Logging Road over N Fork White Rock Creek 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 September 2021.

How much traffic does Logging Road over N Fork White Rock Creek carry?

No traffic count is recorded for this structure.

How long is Logging Road over N Fork White Rock Creek?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.8 m) and a deck 18 ft wide.

Who owns Logging Road over N Fork White Rock Creek?

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