US Bridges

CR 970N over Joseph Ludlow Ditch

Fair

Montgomery County, Indiana · 00.70 W of CR 700 W · Structure no. 5400003

Built
1985
40 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

CR 970N over Joseph Ludlow Ditch is a prestressed concrete stringer/multi-beam or girder carrying CR 970N over Joseph Ludlow Ditch in Montgomery 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 5% of them trucks, projected to reach 150 by 2044. The structure is 42 ft (12.9 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 970N
CrossesJoseph Ludlow Ditch
Location00.70 W of CR 700 W
RouteCounty Highway 78
StateIndiana
Coordinates40.17965, -87.04678
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.5 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.9 m)
Longest span39 ft (11.9 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic150 by 2044
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 970N over Joseph Ludlow Ditch built?

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

What condition is CR 970N over Joseph Ludlow 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 2024.

How much traffic does CR 970N over Joseph Ludlow Ditch carry?

About 100 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is CR 970N over Joseph Ludlow Ditch?

The structure is 42 ft (12.9 m) long with a longest span of 39 ft (11.9 m) and a deck 26 ft wide.

Who owns CR 970N over Joseph Ludlow Ditch?

It is owned by the County Highway Agency.