US Bridges

Winslow Road over Weston Drain Extension

FairPosted for load

Lapeer County, Michigan · Sec 35-36 Attica Twp · Structure no. 000000000005396

Built
1945
80 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
21 ft
1 main span
Daily traffic
345
2016 count
Owner
County
County Highway Agency

About this bridge

Winslow Road over Weston Drain Extension is a steel stringer/multi-beam or girder carrying Winslow Road over Weston Drain Extension in Lapeer County, Michigan. It was built in 1945, so it is 80 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 5 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 345 vehicles a day, projected to reach 513 by 2036. The structure is 21 ft (6.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWinslow Road
CrossesWeston Drain Extension
LocationSec 35-36 Attica Twp
RouteCounty Highway 0
CountyLapeer County
StateMichigan
Coordinates42.98705, -83.12435
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating25.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic345 (2016)
Projected traffic513 by 2036
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 Winslow Road over Weston Drain Extension built?

It was built in 1945, making it 80 years old in 2025.

What condition is Winslow Road over Weston Drain Extension 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 Winslow Road over Weston Drain Extension carry?

About 345 vehicles per day (2016 count).

How long is Winslow Road over Weston Drain Extension?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Winslow Road over Weston Drain Extension?

It is owned by the County Highway Agency.