US Bridges

M-57 over Shiawassee River

Good

Saginaw County, Michigan · In Chesaning · Structure no. 000000000009036

Built
2016
9 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
142 ft
1 main span
Daily traffic
8,700
2016 count
Owner
State
State Highway Agency

About this bridge

M-57 over Shiawassee River is a prestressed concrete stringer/multi-beam or girder carrying M-57 over Shiawassee River in Saginaw County, Michigan. It was built in 2016, so it is 9 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 8,700 vehicles a day, roughly 6% of them trucks, projected to reach 9,625 by 2036. The structure is 142 ft (43.4 m) long and 55 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesM-57
CrossesShiawassee River
LocationIn Chesaning
RouteState Highway 57
CountySaginaw County
StateMichigan
Coordinates43.18408, -84.11414
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
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 rating57.5 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length142 ft (43.4 m)
Longest span138 ft (42.1 m)
Deck width55 ft (16.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2016)
Projected traffic9,625 by 2036
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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 Shiawassee River built?

It was built in 2016, making it 9 years old in 2025.

What condition is M-57 over Shiawassee 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 March 2024.

How much traffic does M-57 over Shiawassee River carry?

About 8,700 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is M-57 over Shiawassee River?

The structure is 142 ft (43.4 m) long with a longest span of 138 ft (42.1 m) and a deck 55 ft wide.

Who owns M-57 over Shiawassee River?

It is owned by the State Highway Agency.