US Bridges

CR 100 South over Mchargue Ditch

FairPosted for load

Jackson County, Indiana · 0.01 E of CR 500 W · Structure no. 3600132

Built
1920
105 years old
Condition
Fair
inspected April 2023
Type
Truss - Thru
Steel
Length
65 ft
1 main span
Daily traffic
50
2013 count
Owner
County
County Highway Agency

About this bridge

CR 100 South over Mchargue Ditch is a steel truss - thru carrying CR 100 South over Mchargue Ditch in Jackson County, Indiana. It was built in 1920, so it is 105 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 5% of them trucks, projected to reach 70 by 2033. The structure is 65 ft (19.7 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 100 South
CrossesMchargue Ditch
Location0.01 E of CR 500 W
RouteCounty Highway 148
CountyJackson County
StateIndiana
Coordinates38.86203, -86.13127
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
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.1 US tons
Inventory rating13.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length65 ft (19.7 m)
Longest span61 ft (18.7 m)
Deck width18 ft (5.4 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2013)
Projected traffic70 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$750,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 100 South over Mchargue Ditch built?

It was built in 1920, making it 105 years old in 2025.

What condition is CR 100 South over Mchargue 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 100 South over Mchargue Ditch carry?

About 50 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is CR 100 South over Mchargue Ditch?

The structure is 65 ft (19.7 m) long with a longest span of 61 ft (18.7 m) and a deck 18 ft wide.

Who owns CR 100 South over Mchargue Ditch?

It is owned by the County Highway Agency.