US Bridges

M-19 over Sullivan Drain

Fair

St. Clair County, Michigan · 1.7 MI N of M-21 · Structure no. 000000000009901

Built
1987
38 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
3,977
2007 count
Owner
State
State Highway Agency

About this bridge

M-19 over Sullivan Drain is a prestressed concrete stringer/multi-beam or girder carrying M-19 over Sullivan Drain in St. Clair County, Michigan. It was built in 1987, so it is 38 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 3,977 vehicles a day, roughly 10% of them trucks, projected to reach 8,954 by 2018. The structure is 42 ft (12.8 m) long and 51 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-19
CrossesSullivan Drain
Location1.7 MI N of M-21
RouteState Highway 19
CountySt. Clair County
StateMichigan
Coordinates43.0208, -82.76215
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length42 ft (12.8 m)
Longest span39 ft (12 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,977 (2007)
Projected traffic8,954 by 2018
Trucks10%
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 Sullivan Drain built?

It was built in 1987, making it 38 years old in 2025.

What condition is M-19 over Sullivan 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 2023.

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

About 3,977 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is M-19 over Sullivan Drain?

The structure is 42 ft (12.8 m) long with a longest span of 39 ft (12 m) and a deck 51 ft wide.

Who owns M-19 over Sullivan Drain?

It is owned by the State Highway Agency.