US Bridges

County Road 410 over Two Hearted River

Good

Luce County, Michigan · 5 MI E of Muscalonge Lake · Structure no. 000000000005920

Built
1977
48 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
30
2016 count
Owner
County
County Highway Agency

About this bridge

County Road 410 over Two Hearted River is a prestressed concrete box beam or girders - multiple carrying County Road 410 over Two Hearted River in Luce County, Michigan. It was built in 1977, so it is 48 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 30 vehicles a day, projected to reach 100 by 2036. The structure is 72 ft (21.9 m) long and 31 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesCounty Road 410
CrossesTwo Hearted River
Location5 MI E of Muscalonge Lake
CountyLuce County
StateMichigan
Coordinates46.65857, -85.53673
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length72 ft (21.9 m)
Longest span68 ft (20.7 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2016)
Projected traffic100 by 2036
Trucks0%
Lanes on structure2
Traffic directionTwo-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 410 over Two Hearted River built?

It was built in 1977, making it 48 years old in 2025.

What condition is County Road 410 over Two Hearted 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 410 over Two Hearted River carry?

About 30 vehicles per day (2016 count).

How long is County Road 410 over Two Hearted River?

The structure is 72 ft (21.9 m) long with a longest span of 68 ft (20.7 m) and a deck 31 ft wide.

Who owns County Road 410 over Two Hearted River?

It is owned by the County Highway Agency.