US Bridges

3015100-0.60 over Log

Poor

Prince of Wales-Hyder Census Area, Alaska · Thorne Bay · Structure no. 100540000001242

Built
1995
30 years old
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
—
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

3015100-0.60 over Log is a wood or timber stringer/multi-beam or girder carrying 3015100-0.60 over Log in Prince of Wales-Hyder Census Area, Alaska. It was built in 1995, so it is 30 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

No traffic count is recorded. The structure is 32 ft (9.8 m) long and 14 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Carries3015100-0.60
CrossesLog
LocationThorne Bay
RouteFederal Lands Road 30151
StateAlaska
Coordinates55.71604, -132.62307
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85.8 US tons
Inventory rating66 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span27 ft (8.2 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 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 3015100-0.60 over Log built?

It was built in 1995, making it 30 years old in 2025.

What condition is 3015100-0.60 over Log in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does 3015100-0.60 over Log carry?

No traffic count is recorded for this structure.

How long is 3015100-0.60 over Log?

The structure is 32 ft (9.8 m) long with a longest span of 27 ft (8.2 m) and a deck 14 ft wide.

Who owns 3015100-0.60 over Log?

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