US Bridges

CR 650N over Little Flatrock River

Fair

Decatur County, Indiana · 00.10 W of CR 350 W · Structure no. 1600022

Built
1899
126 years old, rebuilt 1988
Condition
Fair
inspected April 2023
Type
Arch - Deck
Masonry
Length
134 ft
4 main spans
Daily traffic
180
2017 count
Owner
County
County Highway Agency

About this bridge

CR 650N over Little Flatrock River is a masonry arch - deck carrying CR 650N over Little Flatrock River in Decatur County, Indiana. It was built in 1899 and reconstructed in 1988, so it is 126 years old, older 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 180 vehicles a day, roughly 8% of them trucks, projected to reach 280 by 2037. The structure is 134 ft (40.8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 650N
CrossesLittle Flatrock River
Location00.10 W of CR 350 W
RouteCounty Highway 76
CountyDecatur County
StateIndiana
Coordinates39.43109, -85.54671
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 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckOther
Main spans4
Design loadUnknown
Structure length134 ft (40.8 m)
Longest span39 ft (11.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2017)
Projected traffic280 by 2037
Trucks8%
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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 650N over Little Flatrock River built?

It was built in 1899, making it 126 years old in 2025. It was reconstructed in 1988.

What condition is CR 650N over Little Flatrock River 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 650N over Little Flatrock River carry?

About 180 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is CR 650N over Little Flatrock River?

The structure is 134 ft (40.8 m) long with a longest span of 39 ft (11.8 m) and a deck 24 ft wide.

Who owns CR 650N over Little Flatrock River?

It is owned by the County Highway Agency.