US Bridges

M-19 over Cowhy Drain

Fair

St. Clair County, Michigan · N End of M-19/I-69 Intrch · Structure no. 000000000013696

Built
1981
44 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
6,607
2007 count
Owner
State
State Highway Agency

About this bridge

M-19 over Cowhy Drain is a concrete culvert carrying M-19 over Cowhy Drain in St. Clair County, Michigan. It was built in 1981, so it is 44 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 6,607 vehicles a day, roughly 6% of them trucks, projected to reach 9,800 by 2018. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-19
CrossesCowhy Drain
LocationN End of M-19/I-69 Intrch
RouteState Highway 19
CountySt. Clair County
StateMichigan
Coordinates42.98338, -82.76482
Functional classRural Minor Arterial

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 inspectionMarch 2023
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 alignment8: Equal to present desirable criteria
Operating rating103.2 US tons
Inventory rating61.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,607 (2007)
Projected traffic9,800 by 2018
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-19 over Cowhy Drain built?

It was built in 1981, making it 44 years old in 2025.

What condition is M-19 over Cowhy 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 March 2023.

How much traffic does M-19 over Cowhy Drain carry?

About 6,607 vehicles per day (2007 count), of which roughly 6% are trucks.

How long is M-19 over Cowhy Drain?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m).

Who owns M-19 over Cowhy Drain?

It is owned by the State Highway Agency.