US Bridges

56 TH Street FH32 over Pere Marquette River

Good

Lake County, Michigan · 4 MI W of Baldwin · Structure no. 000000000005277

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
1,400
2005 count
Owner
County
County Highway Agency

About this bridge

56 TH Street FH32 over Pere Marquette River is a prestressed concrete box beam or girders - multiple carrying 56 TH Street FH32 over Pere Marquette River in Lake County, Michigan. It was built in 1997, so it is 28 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,400 vehicles a day, roughly 8% of them trucks, projected to reach 2,500 by 2025. The structure is 108 ft (33 m) long and 40 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Carries56 TH Street FH32
CrossesPere Marquette River
Location4 MI W of Baldwin
RouteCounty Highway 4322
Coordinates43.88704, -85.93704
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating107.1 US tons
Inventory rating53.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length108 ft (33 m)
Longest span104 ft (31.8 m)
Deck width40 ft (12.3 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2005)
Projected traffic2,500 by 2025
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 56 TH Street FH32 over Pere Marquette River built?

It was built in 1997, making it 28 years old in 2025.

What condition is 56 TH Street FH32 over Pere Marquette 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 May 2023.

How much traffic does 56 TH Street FH32 over Pere Marquette River carry?

About 1,400 vehicles per day (2005 count), of which roughly 8% are trucks.

How long is 56 TH Street FH32 over Pere Marquette River?

The structure is 108 ft (33 m) long with a longest span of 104 ft (31.8 m) and a deck 40 ft wide.

Who owns 56 TH Street FH32 over Pere Marquette River?

It is owned by the County Highway Agency.