US Bridges

Deerton Road over Laughing Whitefish River

Good

Alger County, Michigan · At Deerton · Structure no. 000000000000062

Built
2006
19 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
135
2005 count
Owner
County
County Highway Agency

About this bridge

Deerton Road over Laughing Whitefish River is a prestressed concrete box beam or girders - multiple carrying Deerton Road over Laughing Whitefish River in Alger County, Michigan. It was built in 2006, so it is 19 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 135 vehicles a day, projected to reach 270 by 2025. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesDeerton Road
CrossesLaughing Whitefish River
LocationAt Deerton
CountyAlger County
StateMichigan
Coordinates46.47384, -87.04378
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating65 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span41 ft (12.5 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2005)
Projected traffic270 by 2025
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Deerton Road over Laughing Whitefish River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Deerton Road over Laughing Whitefish 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 2023.

How much traffic does Deerton Road over Laughing Whitefish River carry?

About 135 vehicles per day (2005 count).

How long is Deerton Road over Laughing Whitefish River?

The structure is 45 ft (13.7 m) long with a longest span of 41 ft (12.5 m) and a deck 28 ft wide.

Who owns Deerton Road over Laughing Whitefish River?

It is owned by the County Highway Agency.