US Bridges

Platt Road over Milan Center Drain

Fair

Monroe County, Michigan · 0.1 MI S of Cone Road · Structure no. 000000000007385

Built
1980
45 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
50
2018 count
Owner
County
County Highway Agency

About this bridge

Platt Road over Milan Center Drain is a concrete culvert carrying Platt Road over Milan Center Drain in Monroe County, Michigan. It was built in 1980, so it is 45 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 50 vehicles a day, roughly 8% of them trucks, projected to reach 57 by 2038. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesPlatt Road
CrossesMilan Center Drain
Location0.1 MI S of Cone Road
RouteCounty Highway 0
CountyMonroe County
StateMichigan
Coordinates42.03175, -83.69403
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2018)
Projected traffic57 by 2038
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Platt Road over Milan Center Drain built?

It was built in 1980, making it 45 years old in 2025.

What condition is Platt Road over Milan Center Drain 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 November 2024.

How much traffic does Platt Road over Milan Center Drain carry?

About 50 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is Platt Road over Milan Center Drain?

The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.4 m).

Who owns Platt Road over Milan Center Drain?

It is owned by the County Highway Agency.