US Bridges

CR 100 S over Roberts Ditch

Fair

Howard County, Indiana · 0.6 MI E CR 1100 E · Structure no. 3400107

Built
1930
95 years old, rebuilt 1972
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
181
2018 count
Owner
County
County Highway Agency

About this bridge

CR 100 S over Roberts Ditch is a steel stringer/multi-beam or girder carrying CR 100 S over Roberts Ditch in Howard County, Indiana. It was built in 1930 and reconstructed in 1972, so it is 95 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 181 vehicles a day, roughly 5% of them trucks, projected to reach 296 by 2038. The structure is 35 ft (10.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 100 S
CrossesRoberts Ditch
Location0.6 MI E CR 1100 E
RouteCounty Highway 26
CountyHoward County
StateIndiana
Coordinates40.46473, -85.9087
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
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 rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.6 m)
Longest span29 ft (8.8 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic181 (2018)
Projected traffic296 by 2038
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 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 100 S over Roberts Ditch built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1972.

What condition is CR 100 S over Roberts 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 2024.

How much traffic does CR 100 S over Roberts Ditch carry?

About 181 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is CR 100 S over Roberts Ditch?

The structure is 35 ft (10.6 m) long with a longest span of 29 ft (8.8 m) and a deck 27 ft wide.

Who owns CR 100 S over Roberts Ditch?

It is owned by the County Highway Agency.