US Bridges

CR 150W over Flatrock River

PoorPosted for load

Shelby County, Indiana · 00.10 N of CR 1050 S · Structure no. 7300092

Built
1900
125 years old, rebuilt 1970
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
252 ft
4 main spans
Daily traffic
175
2022 count
Owner
County
County Highway Agency

About this bridge

CR 150W over Flatrock River is a prestressed concrete box beam or girders - multiple carrying CR 150W over Flatrock River in Shelby County, Indiana. It was built in 1900 and reconstructed in 1970, so it is 125 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 175 vehicles a day, roughly 5% of them trucks, projected to reach 250 by 2042. The structure is 252 ft (76.9 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 150W
CrossesFlatrock River
Location00.10 N of CR 1050 S
RouteCounty Highway 39
StateIndiana
Coordinates39.37289, -85.80843
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.6 US tons
Inventory rating21.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length252 ft (76.9 m)
Longest span63 ft (19.2 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2022)
Projected traffic250 by 2042
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$800,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 150W over Flatrock River built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1970.

What condition is CR 150W over Flatrock River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does CR 150W over Flatrock River carry?

About 175 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is CR 150W over Flatrock River?

The structure is 252 ft (76.9 m) long with a longest span of 63 ft (19.2 m) and a deck 27 ft wide.

Who owns CR 150W over Flatrock River?

It is owned by the County Highway Agency.