US Bridges

ST Joseph HWY over I-96

Poor

Eaton County, Michigan · 1.0 MI S of M-43 · Structure no. 000000000002325

Built
1962
63 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
324 ft
6 main spans
Daily traffic
2,850
2018 count
Owner
State
State Highway Agency

About this bridge

ST Joseph HWY over I-96 is a prestressed concrete stringer/multi-beam or girder carrying ST Joseph HWY over I-96 in Eaton County, Michigan. It was built in 1962, so it is 63 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,850 vehicles a day, roughly 4% of them trucks, projected to reach 3,785 by 2040. The structure is 324 ft (98.7 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST Joseph HWY
CrossesI-96
Location1.0 MI S of M-43
RouteCounty Highway 0
CountyEaton County
StateMichigan
Coordinates42.72654, -84.66831
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length324 ft (98.7 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,850 (2018)
Projected traffic3,785 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST Joseph HWY over I-96 built?

It was built in 1962, making it 63 years old in 2025.

What condition is ST Joseph HWY over I-96 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does ST Joseph HWY over I-96 carry?

About 2,850 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is ST Joseph HWY over I-96?

The structure is 324 ft (98.7 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns ST Joseph HWY over I-96?

It is owned by the State Highway Agency.