US Bridges

Mosinee Grade Road over Mcdonald Creek

Fair

Gogebic County, Michigan · Sec 25 Erwin Twp · Structure no. 000000000003006

Built
1985
40 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
30
1998 count
Owner
County
County Highway Agency

About this bridge

Mosinee Grade Road over Mcdonald Creek is a concrete culvert carrying Mosinee Grade Road over Mcdonald Creek in Gogebic County, Michigan. It was built in 1985, so it is 40 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 30 vehicles a day, projected to reach 30 by 2018. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesMosinee Grade Road
CrossesMcdonald Creek
LocationSec 25 Erwin Twp
RouteCounty Highway 0
CountyGogebic County
StateMichigan
Coordinates46.36019, -89.99548
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.1 US tons
Inventory rating33.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (1998)
Projected traffic30 by 2018
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$154,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mosinee Grade Road over Mcdonald Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Mosinee Grade Road over Mcdonald Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Mosinee Grade Road over Mcdonald Creek carry?

About 30 vehicles per day (1998 count).

How long is Mosinee Grade Road over Mcdonald Creek?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.4 m).

Who owns Mosinee Grade Road over Mcdonald Creek?

It is owned by the County Highway Agency.