US Bridges

Old M-63 over Little Manistee River

Good

Lake County, Michigan · 11 MI N of Baldwin · Structure no. 000000000005278

Built
2014
11 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
550
2014 count
Owner
County
County Highway Agency

About this bridge

Old M-63 over Little Manistee River is a prestressed concrete box beam or girders - multiple carrying Old M-63 over Little Manistee River in Lake County, Michigan. It was built in 2014, so it is 11 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 550 vehicles a day, projected to reach 700 by 2034. The structure is 60 ft (18.3 m) long and 37 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

CarriesOld M-63
CrossesLittle Manistee River
Location11 MI N of Baldwin
RouteCounty Highway 4370
Coordinates44.05631, -85.84121
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating107.1 US tons
Inventory rating86.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length60 ft (18.3 m)
Longest span57 ft (17.5 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2014)
Projected traffic700 by 2034
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Old M-63 over Little Manistee River built?

It was built in 2014, making it 11 years old in 2025.

What condition is Old M-63 over Little Manistee 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 April 2024.

How much traffic does Old M-63 over Little Manistee River carry?

About 550 vehicles per day (2014 count).

How long is Old M-63 over Little Manistee River?

The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.5 m) and a deck 37 ft wide.

Who owns Old M-63 over Little Manistee River?

It is owned by the County Highway Agency.