US Bridges

FR 146 Winsl over Winslow Creek

FairPosted for load

Iron County, Michigan · NE Cor Sec 2 T45 R36 · Structure no. 000000000004189

Built
1954
71 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
17
1994 count
Owner
County
County Highway Agency

About this bridge

FR 146 Winsl over Winslow Creek is a concrete slab carrying FR 146 Winsl over Winslow Creek in Iron County, Michigan. It was built in 1954, so it is 71 years old, older 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. Its operating status is: posted for load restriction.

It carries about 17 vehicles a day, projected to reach 20 by 2014. The structure is 28 ft (8.5 m) long and 22 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesFR 146 Winsl
CrossesWinslow Creek
LocationNE Cor Sec 2 T45 R36
RouteCounty Highway 0
CountyIron County
StateMichigan
Coordinates46.33326, -88.76528
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating15.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (1994)
Projected traffic20 by 2014
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 FR 146 Winsl over Winslow Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is FR 146 Winsl over Winslow 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 FR 146 Winsl over Winslow Creek carry?

About 17 vehicles per day (1994 count).

How long is FR 146 Winsl over Winslow Creek?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.

Who owns FR 146 Winsl over Winslow Creek?

It is owned by the County Highway Agency.