US Bridges

Withers Road over ST Joseph River

Fair

St. Joseph County, Michigan · 0.75 MI E of US-131 · Structure no. 000000000010340

Built
1979
46 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
242 ft
4 main spans
Daily traffic
774
2019 count
Owner
County
County Highway Agency

About this bridge

Withers Road over ST Joseph River is a prestressed concrete box beam or girders - multiple carrying Withers Road over ST Joseph River in St. Joseph County, Michigan. It was built in 1979, so it is 46 years old, younger 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 6 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 774 vehicles a day, roughly 10% of them trucks, projected to reach 822 by 2039. The structure is 242 ft (73.7 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesWithers Road
CrossesST Joseph River
Location0.75 MI E of US-131
RouteCounty Highway 0
CountySt. Joseph County
StateMichigan
Coordinates41.88929, -85.64821
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.6 US tons
Inventory rating40.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length242 ft (73.7 m)
Longest span61 ft (18.6 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic774 (2019)
Projected traffic822 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Withers Road over ST Joseph River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Withers Road over ST Joseph 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 November 2023.

How much traffic does Withers Road over ST Joseph River carry?

About 774 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Withers Road over ST Joseph River?

The structure is 242 ft (73.7 m) long with a longest span of 61 ft (18.6 m) and a deck 30 ft wide.

Who owns Withers Road over ST Joseph River?

It is owned by the County Highway Agency.