US Bridges

2083-3.486 over Mod

Fair

Prince of Wales-Hyder Census Area, Alaska · Lab Bay · Structure no. 100540000001175

Built
1991
34 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Steel
Length
60 ft
1 main span
Daily traffic
—
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

2083-3.486 over Mod is a steel box beam or girders - multiple carrying 2083-3.486 over Mod in Prince of Wales-Hyder Census Area, Alaska. It was built in 1991, so it is 34 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

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).

Location

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Carries2083-3.486
CrossesMod
LocationLab Bay
RouteFederal Lands Road 20830
CountyPrince of Wales-Hyder Census Area
StateAlaska
Coordinates56.26776, -133.41661
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 rating28.9 US tons
Inventory rating22.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length60 ft (18.3 m)
Longest span59 ft (17.9 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 2083-3.486 over Mod built?

It was built in 1991, making it 34 years old in 2025.

What condition is 2083-3.486 over Mod in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does 2083-3.486 over Mod carry?

No traffic count is recorded for this structure.

How long is 2083-3.486 over Mod?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (17.9 m) and a deck 18 ft wide.

Who owns 2083-3.486 over Mod?

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