US Bridges

Mackinaw Trail over White Pine Trail

Good

Osceola County, Michigan · Section 14/23 T19N R10W · Structure no. 000000000008609

Built
2003
22 years old
Condition
Good
inspected July 2024
Type
Culvert
Steel
Length
25 ft
1 main span
Daily traffic
677
2000 count
Owner
County
County Highway Agency

About this bridge

Mackinaw Trail over White Pine Trail is a steel culvert carrying Mackinaw Trail over White Pine Trail in Osceola County, Michigan. It was built in 2003, so it is 22 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 677 vehicles a day, projected to reach 1,146 by 2020. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMackinaw Trail
CrossesWhite Pine Trail
LocationSection 14/23 T19N R10W
RouteCounty Highway 6760
Coordinates44.03114, -85.46657
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
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.5 m)
Longest span25 ft (7.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic677 (2000)
Projected traffic1,146 by 2020
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mackinaw Trail over White Pine Trail built?

It was built in 2003, making it 22 years old in 2025.

What condition is Mackinaw Trail over White Pine Trail 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 July 2024.

How much traffic does Mackinaw Trail over White Pine Trail carry?

About 677 vehicles per day (2000 count).

How long is Mackinaw Trail over White Pine Trail?

The structure is 25 ft (7.5 m) long with a longest span of 25 ft (7.5 m).

Who owns Mackinaw Trail over White Pine Trail?

It is owned by the County Highway Agency.