US Bridges

County Road 442 over Tahquamenon River

Good

Luce County, Michigan · 2 MI N of Danaher · Structure no. 000000000005925

Built
2009
16 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
20
2016 count
Owner
County
County Highway Agency

About this bridge

County Road 442 over Tahquamenon River is a prestressed concrete box beam or girders - multiple carrying County Road 442 over Tahquamenon River in Luce County, Michigan. It was built in 2009, so it is 16 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 20 vehicles a day, roughly 3% of them trucks, projected to reach 80 by 2036. The structure is 37 ft (11.3 m) long and 15 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesCounty Road 442
CrossesTahquamenon River
Location2 MI N of Danaher
CountyLuce County
StateMichigan
Coordinates46.37274, -85.78182
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span36 ft (10.9 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2016)
Projected traffic80 by 2036
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 County Road 442 over Tahquamenon River built?

It was built in 2009, making it 16 years old in 2025.

What condition is County Road 442 over Tahquamenon 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 October 2024.

How much traffic does County Road 442 over Tahquamenon River carry?

About 20 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is County Road 442 over Tahquamenon River?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (10.9 m) and a deck 15 ft wide.

Who owns County Road 442 over Tahquamenon River?

It is owned by the County Highway Agency.