US Bridges

I-194 NB Off Ramp over Conrail (abn)

Fair

Calhoun County, Michigan · 3.0 MI N of I-94 · Structure no. 000000000001203

Built
1966
59 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
138 ft
3 main spans
Daily traffic
12,203
2007 count
Owner
State
State Highway Agency

About this bridge

I-194 NB Off Ramp over Conrail (abn) is a steel stringer/multi-beam or girder carrying I-194 NB Off Ramp over Conrail (abn) in Calhoun County, Michigan. It was built in 1966, so it is 59 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 5 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 12,203 vehicles a day, roughly 5% of them trucks, projected to reach 22,717 by 2015. The structure is 138 ft (42.2 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-194 NB Off Ramp
CrossesConrail (abn)
Location3.0 MI N of I-94
RouteInterstate 194
CountyCalhoun County
StateMichigan
Coordinates42.30991, -85.18337
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length138 ft (42.2 m)
Longest span57 ft (17.5 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,203 (2007)
Projected traffic22,717 by 2015
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-194 NB Off Ramp over Conrail (abn) built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-194 NB Off Ramp over Conrail (abn) 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 September 2023.

How much traffic does I-194 NB Off Ramp over Conrail (abn) carry?

About 12,203 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is I-194 NB Off Ramp over Conrail (abn)?

The structure is 138 ft (42.2 m) long with a longest span of 57 ft (17.5 m) and a deck 26 ft wide.

Who owns I-194 NB Off Ramp over Conrail (abn)?

It is owned by the State Highway Agency.