US Bridges

CR 18 over Dibbling Ditch

Fair

DeKalb County, Indiana · 00.40 E of CR 31 · Structure no. 1700078

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
3 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

CR 18 over Dibbling Ditch is a prestressed concrete box beam or girders - multiple carrying CR 18 over Dibbling Ditch in DeKalb County, Indiana. It was built in 1985, so it is 40 years old, younger 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 100 vehicles a day, roughly 4% of them trucks, projected to reach 150 by 2044. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 18
CrossesDibbling Ditch
Location00.40 E of CR 31
RouteCounty Highway 174
StateIndiana
Coordinates41.46192, -85.03363
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.6 US tons
Inventory rating47.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span22 ft (6.6 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic150 by 2044
Trucks4%
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 18 over Dibbling Ditch built?

It was built in 1985, making it 40 years old in 2025.

What condition is CR 18 over Dibbling 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 October 2024.

How much traffic does CR 18 over Dibbling Ditch carry?

About 100 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is CR 18 over Dibbling Ditch?

The structure is 70 ft (21.3 m) long with a longest span of 22 ft (6.6 m) and a deck 24 ft wide.

Who owns CR 18 over Dibbling Ditch?

It is owned by the County Highway Agency.