US Bridges

Road over Neka River

Good

Hoonah-Angoon Census Area, Alaska · Eight Fathom Bight · Structure no. 100320000001263

Built
1986
39 years old, rebuilt 2000
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
1 main span
Daily traffic
—
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Neka River is a steel stringer/multi-beam or girder carrying Road over Neka River in Hoonah-Angoon Census Area, Alaska. It was built in 1986 and reconstructed in 2000, so it is 39 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 105 ft (32 m) long and 18 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad
CrossesNeka River
LocationEight Fathom Bight
RouteFederal Lands Road 8580
StateAlaska
Coordinates58.08963, -135.84587
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 rating19.3 US tons
Inventory rating15 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length105 ft (32 m)
Longest span105 ft (32 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 Road over Neka River built?

It was built in 1986, making it 39 years old in 2025. It was reconstructed in 2000.

What condition is Road over Neka River 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 2024.

How much traffic does Road over Neka River carry?

No traffic count is recorded for this structure.

How long is Road over Neka River?

The structure is 105 ft (32 m) long with a longest span of 105 ft (32 m) and a deck 18 ft wide.

Who owns Road over Neka River?

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