US Bridges

2720000-0.145 over Mod

Fair

Prince of Wales-Hyder Census Area, Alaska · Whale Pass · Structure no. 100540000001064

Built
1978
47 years old
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
50 ft
1 main span
Daily traffic
50
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

2720000-0.145 over Mod is a steel truss - thru carrying 2720000-0.145 over Mod in Prince of Wales-Hyder Census Area, Alaska. It was built in 1978, so it is 47 years old, older 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.

It carries about 50 vehicles a day, projected to reach 160 by 2013. The structure is 50 ft (15.2 m) long and 20 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
Carries2720000-0.145
CrossesMod
LocationWhale Pass
RouteFederal Lands Road 27200
CountyPrince of Wales-Hyder Census Area
StateAlaska
Coordinates56.15851, -133.18458
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span49 ft (15 m)
Deck width20 ft (6 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2006)
Projected traffic160 by 2013
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$140,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 2720000-0.145 over Mod built?

It was built in 1978, making it 47 years old in 2025.

What condition is 2720000-0.145 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 2720000-0.145 over Mod carry?

About 50 vehicles per day (2006 count).

How long is 2720000-0.145 over Mod?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (15 m) and a deck 20 ft wide.

Who owns 2720000-0.145 over Mod?

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