US Bridges

CR 150W over Flatrock River Overflow

Poor

Shelby County, Indiana · 00.20 N of CR 1050 S · Structure no. 7300152

Built
1940
85 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
123 ft
6 main spans
Daily traffic
175
2021 count
Owner
County
County Highway Agency

About this bridge

CR 150W over Flatrock River Overflow is a steel stringer/multi-beam or girder carrying CR 150W over Flatrock River Overflow in Shelby County, Indiana. It was built in 1940, so it is 85 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.

It carries about 175 vehicles a day, roughly 5% of them trucks, projected to reach 250 by 2041. The structure is 123 ft (37.4 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 150W
CrossesFlatrock River Overflow
Location00.20 N of CR 1050 S
RouteCounty Highway 39
StateIndiana
Coordinates39.37443, -85.80844
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating27.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length123 ft (37.4 m)
Longest span20 ft (6.2 m)
Deck width18 ft (5.4 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2021)
Projected traffic250 by 2041
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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$150,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 150W over Flatrock River Overflow built?

It was built in 1940, making it 85 years old in 2025.

What condition is CR 150W over Flatrock River Overflow 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 Overflow carry?

About 175 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is CR 150W over Flatrock River Overflow?

The structure is 123 ft (37.4 m) long with a longest span of 20 ft (6.2 m) and a deck 18 ft wide.

Who owns CR 150W over Flatrock River Overflow?

It is owned by the County Highway Agency.