US Bridges

Indianapolis RD over Flatrock River

Fair

Bartholomew County, Indiana · 00.11 NW of 11th Strret · Structure no. 0300318

Built
1926
99 years old, rebuilt 1995
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
472 ft
5 main spans
Daily traffic
190
2022 count
Owner
County
County Highway Agency

About this bridge

Indianapolis RD over Flatrock River is a steel continuous stringer/multi-beam or girder carrying Indianapolis RD over Flatrock River in Bartholomew County, Indiana. It was built in 1926 and reconstructed in 1995, so it is 99 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 190 vehicles a day, roughly 3% of them trucks, projected to reach 280 by 2038. The structure is 472 ft (143.8 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIndianapolis RD
CrossesFlatrock River
Location00.11 NW of 11th Strret
RouteCity Street 0
StateIndiana
Coordinates39.20944, -85.92827
Functional classUrban Other Principal Arterial

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length472 ft (143.8 m)
Longest span85 ft (25.9 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2022)
Projected traffic280 by 2038
Trucks3%
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 Indianapolis RD over Flatrock River built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1995.

What condition is Indianapolis RD 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 June 2024.

How much traffic does Indianapolis RD over Flatrock River carry?

About 190 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Indianapolis RD over Flatrock River?

The structure is 472 ft (143.8 m) long with a longest span of 85 ft (25.9 m) and a deck 46 ft wide.

Who owns Indianapolis RD over Flatrock River?

It is owned by the County Highway Agency.