US Bridges

Winkler Mill over Stony Creek

PoorPosted for load

Oakland County, Michigan · North of Washington RD · Structure no. 000000000008193

Built
1967
58 years old
Condition
Poor
inspected September 2024
Type
Slab
Wood or Timber
Length
22 ft
1 main span
Daily traffic
346
2016 count
Owner
County
County Highway Agency

About this bridge

Winkler Mill over Stony Creek is a wood or timber slab carrying Winkler Mill over Stony Creek in Oakland County, Michigan. It was built in 1967, so it is 58 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 346 vehicles a day, projected to reach 725 by 2041. The structure is 22 ft (6.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWinkler Mill
CrossesStony Creek
LocationNorth of Washington RD
RouteCounty Highway 0
Coordinates42.70723, -83.10296
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating33.2 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic346 (2016)
Projected traffic725 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Winkler Mill over Stony Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Winkler Mill over Stony Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Winkler Mill over Stony Creek carry?

About 346 vehicles per day (2016 count).

How long is Winkler Mill over Stony Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns Winkler Mill over Stony Creek?

It is owned by the County Highway Agency.