US Bridges

Route 386 over Big Cedar River

Fair

Menominee County, Michigan · 3MI SE of Wilson · Structure no. 000000000006823

Built
1979
46 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
150
Owner
County
County Highway Agency

About this bridge

Route 386 over Big Cedar River is a prestressed concrete box beam or girders - multiple carrying Route 386 over Big Cedar River in Menominee County, Michigan. It was built in 1979, so it is 46 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 150 vehicles a day, projected to reach 185 by 2019. The structure is 72 ft (21.9 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesRoute 386
CrossesBig Cedar River
Location3MI SE of Wilson
RouteCounty Highway 5563
Coordinates45.66685, -87.39929
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating46.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length72 ft (21.9 m)
Longest span69 ft (21 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (—)
Projected traffic185 by 2019
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Route 386 over Big Cedar River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Route 386 over Big Cedar River 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 Route 386 over Big Cedar River carry?

About 150 vehicles per day (latest count).

How long is Route 386 over Big Cedar River?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 31 ft wide.

Who owns Route 386 over Big Cedar River?

It is owned by the County Highway Agency.