US Bridges

Mackinac Trail over Charlotte River

Good

Chippewa County, Michigan · 4 MI S of Sault Ste Marie · Structure no. 000000000001627

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
51 ft
1 main span
Daily traffic
452
2023 count
Owner
County
County Highway Agency

About this bridge

Mackinac Trail over Charlotte River is a concrete culvert carrying Mackinac Trail over Charlotte River in Chippewa County, Michigan. It was built in 2024, so it is 1 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 452 vehicles a day, roughly 17% of them trucks, projected to reach 551 by 2043. The structure is 51 ft (15.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMackinac Trail
CrossesCharlotte River
Location4 MI S of Sault Ste Marie
RouteCounty Highway 0
Coordinates46.40427, -84.39361
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.7 US tons
Inventory rating61.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic452 (2023)
Projected traffic551 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Mackinac Trail over Charlotte River built?

It was built in 2024, making it 1 years old in 2025.

What condition is Mackinac Trail over Charlotte 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 November 2024.

How much traffic does Mackinac Trail over Charlotte River carry?

About 452 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Mackinac Trail over Charlotte River?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m).

Who owns Mackinac Trail over Charlotte River?

It is owned by the County Highway Agency.