CR 61A over Donnell Ditch

Good

DeKalb County, Indiana · 00.20 N of CR 24 · Structure no. 1700087

Built: 2003; 22 years old
Condition: Good; inspected October 2024
Type: Slab; Concrete
Length: 42 ft; 1 main span
Daily traffic: 725; 2024 count
Owner: County; County Highway Agency

About this bridge

CR 61A over Donnell Ditch is a concrete slab carrying CR 61A over Donnell Ditch in DeKalb County, Indiana. It was built in 2003, so it is 22 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 725 vehicles a day, roughly 6% of them trucks, projected to reach 1,000 by 2044. The structure is 42 ft (12.8 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesCR 61A

CrossesDonnell Ditch

Location00.20 N of CR 24

RouteCounty Highway 61

CountyDeKalb County

StateIndiana

Coordinates41.44551, -84.89653

Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	8 Very Good	No problems noted.

Last inspectionOctober 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria

Operating rating35.9 US tons

Inventory rating35.9 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans1

Design loadHS 20

Structure length42 ft (12.8 m)

Longest span38 ft (11.5 m)

Deck width28 ft (8.6 m)

Roadway width28 ft (8.4 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2024)

Projected traffic1,000 by 2044

Trucks6%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed0.6 mi (1 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 61A over Donnell Ditch built?

It was built in 2003, making it 22 years old in 2025.

What condition is CR 61A over Donnell Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does CR 61A over Donnell Ditch carry?

About 725 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is CR 61A over Donnell Ditch?

The structure is 42 ft (12.8 m) long with a longest span of 38 ft (11.5 m) and a deck 28 ft wide.

Who owns CR 61A over Donnell Ditch?

It is owned by the County Highway Agency.