US Bridges

Route 432 over Rapid River

FairPosted for load

Delta County, Michigan · 3.5 MI W of Ush 41 · Structure no. 000000000002125

Built
1939
86 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
145
2020 count
Owner
County
County Highway Agency

About this bridge

Route 432 over Rapid River is a steel stringer/multi-beam or girder carrying Route 432 over Rapid River in Delta County, Michigan. It was built in 1939, 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. Its operating status is: posted for load restriction.

It carries about 145 vehicles a day, roughly 5% of them trucks, projected to reach 145 by 2040. The structure is 50 ft (15.2 m) long and 26 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

Open in Google Maps
CarriesRoute 432
CrossesRapid River
Location3.5 MI W of Ush 41
RouteCounty Highway 2154
CountyDelta County
StateMichigan
Coordinates46.10081, -87.03489
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.2 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width26 ft (7.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic145 (2020)
Projected traffic145 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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 Route 432 over Rapid River built?

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

What condition is Route 432 over Rapid River 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 June 2023.

How much traffic does Route 432 over Rapid River carry?

About 145 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Route 432 over Rapid River?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.

Who owns Route 432 over Rapid River?

It is owned by the County Highway Agency.