US Bridges

N Walnut ST over Little Flatrock River

Good

Rush County, Indiana · 00.40 N of SR 244 · Structure no. 7000172

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
175
2019 count
Owner
County
County Highway Agency

About this bridge

N Walnut ST over Little Flatrock River is a prestressed concrete continuous stringer/multi-beam or girder carrying N Walnut ST over Little Flatrock River in Rush County, Indiana. It was built in 1997, so it is 28 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 175 vehicles a day, roughly 5% of them trucks, projected to reach 250 by 2039. The structure is 143 ft (43.5 m) long and 27 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesN Walnut ST
CrossesLittle Flatrock River
Location00.40 N of SR 244
RouteCounty Highway 0
StateIndiana
Coordinates39.50293, -85.46469
Functional classRural Local

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.5 m)
Longest span59 ft (17.9 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2019)
Projected traffic250 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 N Walnut ST over Little Flatrock River built?

It was built in 1997, making it 28 years old in 2025.

What condition is N Walnut ST over Little Flatrock River 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 May 2023.

How much traffic does N Walnut ST over Little Flatrock River carry?

About 175 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is N Walnut ST over Little Flatrock River?

The structure is 143 ft (43.5 m) long with a longest span of 59 ft (17.9 m) and a deck 27 ft wide.

Who owns N Walnut ST over Little Flatrock River?

It is owned by the County Highway Agency.