US Bridges

46 Mile Road over Forty Seven Mile Creek

Fair

Menominee County, Michigan · 1.5 Mi. SW of Perronville · Structure no. 000000000006851

Built
1977
48 years old
Condition
Fair
inspected June 2023
Type
Culvert
Steel
Length
34 ft
3 main spans
Daily traffic
20
Owner
County
County Highway Agency

About this bridge

46 Mile Road over Forty Seven Mile Creek is a steel culvert carrying 46 Mile Road over Forty Seven Mile Creek in Menominee 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 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 20 vehicles a day, projected to reach 25 by 2019. The structure is 34 ft (10.3 m) long. If it were closed, the detour would be 124.9 mi (201 km).

Location

Open in Google Maps
Carries46 Mile Road
CrossesForty Seven Mile Creek
Location1.5 Mi. SW of Perronville
RouteCounty Highway 0
CountyMenominee County
StateMichigan
Coordinates45.78323, -87.37352
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadHS 20 + Mod
Structure length34 ft (10.3 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 traffic20 (—)
Projected traffic25 by 2019
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed124.9 mi (201 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 46 Mile Road over Forty Seven Mile Creek built?

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

What condition is 46 Mile Road over Forty Seven Mile 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 June 2023.

How much traffic does 46 Mile Road over Forty Seven Mile Creek carry?

About 20 vehicles per day (latest count).

How long is 46 Mile Road over Forty Seven Mile Creek?

The structure is 34 ft (10.3 m) long with a longest span of 8 ft (2.4 m).

Who owns 46 Mile Road over Forty Seven Mile Creek?

It is owned by the County Highway Agency.