US Bridges

23 Mile Road over I-94

Fair

Calhoun County, Michigan · 7.9 MI E of I-69 · Structure no. 000000000001281

Built
1959
66 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
227 ft
4 main spans
Daily traffic
150
1988 count
Owner
State
State Highway Agency

About this bridge

23 Mile Road over I-94 is a concrete continuous tee beam carrying 23 Mile Road over I-94 in Calhoun County, Michigan. It was built in 1959, so it is 66 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 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 150 vehicles a day, roughly 3% of them trucks, projected to reach 200 by 2000. The structure is 227 ft (69.2 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries23 Mile Road
CrossesI-94
Location7.9 MI E of I-69
RouteCounty Highway 0
CountyCalhoun County
StateMichigan
Coordinates42.28341, -84.84784
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length227 ft (69.2 m)
Longest span71 ft (21.6 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1988)
Projected traffic200 by 2000
Trucks3%
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 23 Mile Road over I-94 built?

It was built in 1959, making it 66 years old in 2025.

What condition is 23 Mile Road over I-94 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 August 2023.

How much traffic does 23 Mile Road over I-94 carry?

About 150 vehicles per day (1988 count), of which roughly 3% are trucks.

How long is 23 Mile Road over I-94?

The structure is 227 ft (69.2 m) long with a longest span of 71 ft (21.6 m) and a deck 33 ft wide.

Who owns 23 Mile Road over I-94?

It is owned by the State Highway Agency.