US Bridges

M-57 over Butternut Creek

Fair

Montcalm County, Michigan · W of Carson City Limits · Structure no. 000000000007434

Built
1940
85 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
5,487
2007 count
Owner
State
State Highway Agency

About this bridge

M-57 over Butternut Creek is a concrete tee beam carrying M-57 over Butternut Creek in Montcalm County, Michigan. It was built in 1940, so it is 85 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 5,487 vehicles a day, roughly 16% of them trucks, projected to reach 3,270 by 2018. The structure is 31 ft (9.4 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-57
CrossesButternut Creek
LocationW of Carson City Limits
RouteState Highway 57
CountyMontcalm County
StateMichigan
Coordinates43.17719, -84.8576
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating34.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width40 ft (12.2 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,487 (2007)
Projected traffic3,270 by 2018
Trucks16%
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 Butternut Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is M-57 over Butternut Creek 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 October 2023.

How much traffic does M-57 over Butternut Creek carry?

About 5,487 vehicles per day (2007 count), of which roughly 16% are trucks.

How long is M-57 over Butternut Creek?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 40 ft wide.

Who owns M-57 over Butternut Creek?

It is owned by the State Highway Agency.