US Bridges

CR 640N over Middle Fork Clifty Creek

Fair

Decatur County, Indiana · 00.40 W of CR 400 E · Structure no. 1600036

Built
2000
25 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
230
2017 count
Owner
County
County Highway Agency

About this bridge

CR 640N over Middle Fork Clifty Creek is a prestressed concrete box beam or girders - multiple carrying CR 640N over Middle Fork Clifty Creek in Decatur County, Indiana. It was built in 2000, so it is 25 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 230 vehicles a day, roughly 6% of them trucks, projected to reach 360 by 2037. The structure is 61 ft (18.5 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCR 640N
CrossesMiddle Fork Clifty Creek
Location00.40 W of CR 400 E
RouteCounty Highway 78
CountyDecatur County
StateIndiana
Coordinates39.43279, -85.41112
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.5 m)
Longest span59 ft (17.9 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2017)
Projected traffic360 by 2037
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 640N over Middle Fork Clifty Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is CR 640N over Middle Fork Clifty Creek 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 640N over Middle Fork Clifty Creek carry?

About 230 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is CR 640N over Middle Fork Clifty Creek?

The structure is 61 ft (18.5 m) long with a longest span of 59 ft (17.9 m) and a deck 24 ft wide.

Who owns CR 640N over Middle Fork Clifty Creek?

It is owned by the County Highway Agency.