US Bridges

Michigan Road over I-74 Wb/Eb

Fair

Shelby County, Indiana · 01.39 W SR 9 · Structure no. 044810

Built
1958
67 years old, rebuilt 1988
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
243 ft
4 main spans
Daily traffic
2,149
2016 count
Owner
State
State Highway Agency

About this bridge

Michigan Road over I-74 Wb/Eb is a concrete continuous stringer/multi-beam or girder carrying Michigan Road over I-74 Wb/Eb in Shelby County, Indiana. It was built in 1958 and reconstructed in 1988, so it is 67 years old, older than the Indiana average of 46.6 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 2,149 vehicles a day, roughly 10% of them trucks, projected to reach 5,100 by 2031. The structure is 243 ft (74.2 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMichigan Road
CrossesI-74 Wb/Eb
Location01.39 W SR 9
RouteCity Street 0
CountyShelby County
StateIndiana
Coordinates39.56421, -85.79498
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating44 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length243 ft (74.2 m)
Longest span75 ft (23 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,149 (2016)
Projected traffic5,100 by 2031
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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-74 Wb/Eb built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1988.

What condition is Michigan Road over I-74 Wb/Eb 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 June 2023.

How much traffic does Michigan Road over I-74 Wb/Eb carry?

About 2,149 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Michigan Road over I-74 Wb/Eb?

The structure is 243 ft (74.2 m) long with a longest span of 75 ft (23 m) and a deck 36 ft wide.

Who owns Michigan Road over I-74 Wb/Eb?

It is owned by the State Highway Agency.