US Bridges

CR 400 W over I-74 Michigan Road

Fair

Shelby County, Indiana · 05.88 W SR 9 · Structure no. 044760

Built
1958
67 years old, rebuilt 1987
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
304 ft
3 main spans
Daily traffic
400
2016 count
Owner
State
State Highway Agency

About this bridge

CR 400 W over I-74 Michigan Road is a steel continuous stringer/multi-beam or girder carrying CR 400 W over I-74 Michigan Road in Shelby County, Indiana. It was built in 1958 and reconstructed in 1987, 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 400 vehicles a day, roughly 10% of them trucks, projected to reach 800 by 2031. The structure is 304 ft (92.8 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCR 400 W
CrossesI-74 Michigan Road
Location05.88 W SR 9
RouteCounty Highway 0
CountyShelby County
StateIndiana
Coordinates39.60836, -85.85563
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length304 ft (92.8 m)
Longest span83 ft (25.2 m)
Deck width29 ft (8.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2016)
Projected traffic800 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 CR 400 W over I-74 Michigan Road built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1987.

What condition is CR 400 W over I-74 Michigan Road 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 July 2023.

How much traffic does CR 400 W over I-74 Michigan Road carry?

About 400 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is CR 400 W over I-74 Michigan Road?

The structure is 304 ft (92.8 m) long with a longest span of 83 ft (25.2 m) and a deck 29 ft wide.

Who owns CR 400 W over I-74 Michigan Road?

It is owned by the State Highway Agency.