US Bridges

Michigan Road over I-69 I-94

Good

St. Clair County, Michigan · I-69 I-94 Interchange · Structure no. 000000000013687

Built
2015
10 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
793 ft
8 main spans
Daily traffic
2,663
2012 count
Owner
State
State Highway Agency

About this bridge

Michigan Road over I-69 I-94 is a steel continuous stringer/multi-beam or girder carrying Michigan Road over I-69 I-94 in St. Clair County, Michigan. It was built in 2015, so it is 10 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,663 vehicles a day, roughly 3% of them trucks, projected to reach 3,400 by 2032. The structure is 793 ft (241.6 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMichigan Road
CrossesI-69 I-94
LocationI-69 I-94 Interchange
RouteCounty Highway 212
CountySt. Clair County
StateMichigan
Coordinates42.974, -82.4834
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadGreater than HL 93
Structure length793 ft (241.6 m)
Longest span118 ft (36 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,663 (2012)
Projected traffic3,400 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 Michigan Road over I-69 I-94 built?

It was built in 2015, making it 10 years old in 2025.

What condition is Michigan Road over I-69 I-94 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 October 2023.

How much traffic does Michigan Road over I-69 I-94 carry?

About 2,663 vehicles per day (2012 count), of which roughly 3% are trucks.

How long is Michigan Road over I-69 I-94?

The structure is 793 ft (241.6 m) long with a longest span of 118 ft (36 m) and a deck 48 ft wide.

Who owns Michigan Road over I-69 I-94?

It is owned by the State Highway Agency.