US Bridges

Michigan Road over Bassett Ditch

Fair

Shelby County, Indiana · 00.30 Mi. S. of I-74 · Structure no. 7300159

Built
1960
65 years old, rebuilt 1978
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
850
2023 count
Owner
County
County Highway Agency

About this bridge

Michigan Road over Bassett Ditch is a concrete slab carrying Michigan Road over Bassett Ditch in Shelby County, Indiana. It was built in 1960 and reconstructed in 1978, so it is 65 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 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 850 vehicles a day, roughly 15% of them trucks, projected to reach 1,200 by 2039. The structure is 28 ft (8.5 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesMichigan Road
CrossesBassett Ditch
Location00.30 Mi. S. of I-74
RouteCity Street 0
CountyShelby County
StateIndiana
Coordinates39.55877, -85.79382
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2023)
Projected traffic1,200 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Michigan Road over Bassett Ditch built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1978.

What condition is Michigan Road over Bassett Ditch 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 November 2023.

How much traffic does Michigan Road over Bassett Ditch carry?

About 850 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Michigan Road over Bassett Ditch?

The structure is 28 ft (8.5 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns Michigan Road over Bassett Ditch?

It is owned by the County Highway Agency.