US Bridges

M-57 over County Drain

Fair

Gratiot County, Michigan · 1.0 MI SE of Ashley · Structure no. 000000000003120

Built
1939
86 years old, rebuilt 2006
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
3,942
2007 count
Owner
State
State Highway Agency

About this bridge

M-57 over County Drain is a steel stringer/multi-beam or girder carrying M-57 over County Drain in Gratiot County, Michigan. It was built in 1939 and reconstructed in 2006, so it is 86 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.

It carries about 3,942 vehicles a day, roughly 14% of them trucks, projected to reach 3,280 by 2026. The structure is 25 ft (7.6 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-57
CrossesCounty Drain
Location1.0 MI SE of Ashley
RouteState Highway 57
CountyGratiot County
StateMichigan
Coordinates43.17587, -84.45771
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating70.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.2 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,942 (2007)
Projected traffic3,280 by 2026
Trucks14%
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-57 over County Drain built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2006.

What condition is M-57 over County 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 September 2024.

How much traffic does M-57 over County Drain carry?

About 3,942 vehicles per day (2007 count), of which roughly 14% are trucks.

How long is M-57 over County Drain?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.2 m) and a deck 41 ft wide.

Who owns M-57 over County Drain?

It is owned by the State Highway Agency.