US Bridges

CR 640N over Br Middle Fork Clifty CR

Good

Decatur County, Indiana · 00.30 W of CR 500 E · Structure no. 1600037

Built
1994
31 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
430
2017 count
Owner
County
County Highway Agency

About this bridge

CR 640N over Br Middle Fork Clifty CR is a prestressed concrete box beam or girders - multiple carrying CR 640N over Br Middle Fork Clifty CR in Decatur County, Indiana. It was built in 1994, so it is 31 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 430 vehicles a day, roughly 6% of them trucks, projected to reach 680 by 2037. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 640N
CrossesBr Middle Fork Clifty CR
Location00.30 W of CR 500 E
RouteCounty Highway 80
CountyDecatur County
StateIndiana
Coordinates39.43318, -85.38992
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.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic430 (2017)
Projected traffic680 by 2037
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Br Middle Fork Clifty CR built?

It was built in 1994, making it 31 years old in 2025.

What condition is CR 640N over Br Middle Fork Clifty CR 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 April 2023.

How much traffic does CR 640N over Br Middle Fork Clifty CR carry?

About 430 vehicles per day (2017 count), of which roughly 6% are trucks.

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

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns CR 640N over Br Middle Fork Clifty CR?

It is owned by the County Highway Agency.