US Bridges

22 1/2 Mile Road over I-94

FairPosted for load

Calhoun County, Michigan · 7.2 MI E of I-69 · Structure no. 000000000001280

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
227 ft
4 main spans
Daily traffic
2,800
2011 count
Owner
State
State Highway Agency

About this bridge

22 1/2 Mile Road over I-94 is a concrete continuous tee beam carrying 22 1/2 Mile Road over I-94 in Calhoun County, Michigan. It was built in 1960, so it is 65 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. Its operating status is: posted for load restriction.

It carries about 2,800 vehicles a day, roughly 11% of them trucks, projected to reach 3,100 by 2031. The structure is 227 ft (69.3 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries22 1/2 Mile Road
CrossesI-94
Location7.2 MI E of I-69
RouteCounty Highway 1373
CountyCalhoun County
StateMichigan
Coordinates42.283, -84.86265
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating30.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length227 ft (69.3 m)
Longest span71 ft (21.6 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2011)
Projected traffic3,100 by 2031
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 22 1/2 Mile Road over I-94 built?

It was built in 1960, making it 65 years old in 2025.

What condition is 22 1/2 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 2024.

How much traffic does 22 1/2 Mile Road over I-94 carry?

About 2,800 vehicles per day (2011 count), of which roughly 11% are trucks.

How long is 22 1/2 Mile Road over I-94?

The structure is 227 ft (69.3 m) long with a longest span of 71 ft (21.6 m) and a deck 33 ft wide.

Who owns 22 1/2 Mile Road over I-94?

It is owned by the State Highway Agency.