US Bridges

M-19 over Br Cass River

Good

Sanilac County, Michigan · 6.7 MI N of M-46 · Structure no. 000000000009470

Built
2007
18 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
1,718
2007 count
Owner
State
State Highway Agency

About this bridge

M-19 over Br Cass River is a concrete culvert carrying M-19 over Br Cass River in Sanilac County, Michigan. It was built in 2007, so it is 18 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,718 vehicles a day, roughly 9% of them trucks, projected to reach 2,150 by 2027. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-19
CrossesBr Cass River
Location6.7 MI N of M-46
RouteState Highway 19
CountySanilac County
StateMichigan
Coordinates43.51584, -82.9335
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 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 rating48.6 US tons
Inventory rating29.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,718 (2007)
Projected traffic2,150 by 2027
Trucks9%
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

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 Br Cass River built?

It was built in 2007, making it 18 years old in 2025.

What condition is M-19 over Br Cass River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does M-19 over Br Cass River carry?

About 1,718 vehicles per day (2007 count), of which roughly 9% are trucks.

How long is M-19 over Br Cass River?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m).

Who owns M-19 over Br Cass River?

It is owned by the State Highway Agency.