US Bridges

CR 150 South over Mcmillian Ditch

Fair

Jackson County, Indiana · 0.25 E of CR 600 W · Structure no. 3600131

Built
1910
115 years old, rebuilt 1991
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
60
2013 count
Owner
County
County Highway Agency

About this bridge

CR 150 South over Mcmillian Ditch is a prestressed concrete box beam or girders - multiple carrying CR 150 South over Mcmillian Ditch in Jackson County, Indiana. It was built in 1910 and reconstructed in 1991, so it is 115 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 60 vehicles a day, roughly 3% of them trucks, projected to reach 85 by 2031. The structure is 32 ft (9.8 m) long and 21 ft wide.

CarriesCR 150 South
CrossesMcmillian Ditch
Location0.25 E of CR 600 W
RouteCounty Highway 146
StateIndiana
Coordinates38.85448, -86.14497
Functional classRural Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.7 US tons
Inventory rating46 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span26 ft (8 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2013)
Projected traffic85 by 2031
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 CR 150 South over Mcmillian Ditch built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1991.

What condition is CR 150 South over Mcmillian 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 April 2023.

How much traffic does CR 150 South over Mcmillian Ditch carry?

About 60 vehicles per day (2013 count), of which roughly 3% are trucks.

How long is CR 150 South over Mcmillian Ditch?

The structure is 32 ft (9.8 m) long with a longest span of 26 ft (8 m) and a deck 21 ft wide.

Who owns CR 150 South over Mcmillian Ditch?

It is owned by the County Highway Agency.