US Bridges

3013150-0.63 over Mod

Good

Prince of Wales-Hyder Census Area, Alaska · Control Lake · Structure no. 100540000001096

Built
1978
47 years old
Condition
Good
inspected September 2024
Type
Truss - Thru
Steel
Length
70 ft
1 main span
Daily traffic
5
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

3013150-0.63 over Mod is a steel truss - thru carrying 3013150-0.63 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 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.

It carries about 5 vehicles a day, projected to reach 5 by 2013. The structure is 70 ft (21.3 m) long and 20 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Carries3013150-0.63
CrossesMod
LocationControl Lake
RouteFederal Lands Road 30131
StateAlaska
Coordinates55.66724, -132.67829
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 evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length70 ft (21.3 m)
Longest span69 ft (21.1 m)
Deck width20 ft (6 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2018)
Projected traffic5 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$180,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 3013150-0.63 over Mod built?

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

What condition is 3013150-0.63 over Mod 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 3013150-0.63 over Mod carry?

About 5 vehicles per day (2018 count).

How long is 3013150-0.63 over Mod?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (21.1 m) and a deck 20 ft wide.

Who owns 3013150-0.63 over Mod?

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