US Bridges

Logging Road over Lower Swanson Creek

Good

Haines Borough, Alaska · Homeshore · Structure no. 100330000001287

Built
1988
37 years old
Condition
Good
inspected October 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
85 ft
1 main span
Daily traffic
—
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Logging Road over Lower Swanson Creek is a steel stringer/multi-beam or girder carrying Logging Road over Lower Swanson Creek in Haines Borough, Alaska. It was built in 1988, so it is 37 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 85 ft (25.9 m) long and 18 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesLogging Road
CrossesLower Swanson Creek
LocationHomeshore
RouteFederal Lands Road 8553
StateAlaska
Coordinates58.2475, -135.1761
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 protection9 ExcellentNo problems noted.
Last inspectionOctober 2021
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 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 rating23.3 US tons
Inventory rating17.9 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length85 ft (25.9 m)
Longest span83 ft (25.3 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 Lower Swanson Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Logging Road over Lower Swanson 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 October 2021.

How much traffic does Logging Road over Lower Swanson Creek carry?

No traffic count is recorded for this structure.

How long is Logging Road over Lower Swanson Creek?

The structure is 85 ft (25.9 m) long with a longest span of 83 ft (25.3 m) and a deck 18 ft wide.

Who owns Logging Road over Lower Swanson Creek?

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