US Bridges

CR 800N over Flatrock River

Fair

Rush County, Indiana · 00.10 W of CR 450 E · Structure no. 7000052

Built
1945
80 years old, rebuilt 1968
Condition
Fair
inspected May 2023
Type
Channel Beam
Concrete
Length
60 ft
2 main spans
Daily traffic
100
2019 count
Owner
County
County Highway Agency

About this bridge

CR 800N over Flatrock River is a concrete channel beam carrying CR 800N over Flatrock River in Rush County, Indiana. It was built in 1945 and reconstructed in 1968, so it is 80 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 5 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 2039. The structure is 60 ft (18.2 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 800N
CrossesFlatrock River
Location00.10 W of CR 450 E
RouteCounty Highway 64
CountyRush County
StateIndiana
Coordinates39.7293, -85.36483
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length60 ft (18.2 m)
Longest span29 ft (8.8 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic150 by 2039
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 800N over Flatrock River built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1968.

What condition is CR 800N over 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 May 2023.

How much traffic does CR 800N over Flatrock River carry?

About 100 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is CR 800N over Flatrock River?

The structure is 60 ft (18.2 m) long with a longest span of 29 ft (8.8 m) and a deck 23 ft wide.

Who owns CR 800N over Flatrock River?

It is owned by the County Highway Agency.