US Bridges

Arbogast Road over ST Joseph River

Good

Branch County, Michigan · Union Twp Sec 5-6 · Structure no. 000000000001143

Built
2016
9 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
188 ft
3 main spans
Daily traffic
1,180
2016 count
Owner
County
County Highway Agency

About this bridge

Arbogast Road over ST Joseph River is a prestressed concrete box beam or girders - multiple carrying Arbogast Road over ST Joseph River in Branch 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 1,180 vehicles a day, roughly 2% of them trucks, projected to reach 1,753 by 2036. The structure is 188 ft (57.3 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesArbogast Road
CrossesST Joseph River
LocationUnion Twp Sec 5-6
RouteCounty Highway 0
CountyBranch County
StateMichigan
Coordinates42.06334, -85.1582
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating86.1 US tons
Inventory rating66.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length188 ft (57.3 m)
Longest span63 ft (19.1 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,180 (2016)
Projected traffic1,753 by 2036
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$500,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Arbogast Road over ST Joseph River built?

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

What condition is Arbogast Road over ST Joseph 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 September 2023.

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

About 1,180 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Arbogast Road over ST Joseph River?

The structure is 188 ft (57.3 m) long with a longest span of 63 ft (19.1 m) and a deck 34 ft wide.

Who owns Arbogast Road over ST Joseph River?

It is owned by the County Highway Agency.