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Logging Road over Stream

Petersburg Borough, Alaska · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Logging Road over Stream in Petersburg Borough, Alaska, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1981, making it 44 years old at the 2025 inventory.
It is one of 63 of the 137 inventoried bridges in Petersburg Borough rated fair (46.0%); 11 (8.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 80 ft
Location	Kupreanof Island Portage
NBI structure number	100210000001209
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Alaska department of transportation.

Bridge	Built	Vehicles/day	Condition
Nordic Drive over Hammer Slough	1974	4,210	Fair
Ifa Ferry Route over Petersburg S Mitkof Term	2006	2,659	Good
Irr:ptrsbg/kake Rd over Gunnuk Creek	1981	770	Fair
Mitkof Highway over Twin Creek	1996	760	Good
Irr:keku Rd (kake) over Sitkum Creek	2011	270	Fair
Birch Street over Birch Street Viaduct	1960	200	Fair