US Bridges

CR 450E over Br Little Flatrock River

Poor

Rush County, Indiana · 00.70 N of CR 450 S · Structure no. 7000147

Built
1900
125 years old, rebuilt 1972
Condition
Poor
inspected April 2024
Type
Channel Beam
Concrete
Length
30 ft
1 main span
Daily traffic
450
2020 count
Owner
County
County Highway Agency

About this bridge

CR 450E over Br Little Flatrock River is a concrete channel beam carrying CR 450E over Br Little Flatrock River in Rush County, Indiana. It was built in 1900 and reconstructed in 1972, 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.

It carries about 450 vehicles a day, roughly 5% of them trucks, projected to reach 625 by 2040. The structure is 30 ft (9 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 450E
CrossesBr Little Flatrock River
Location00.70 N of CR 450 S
RouteCounty Highway 91
StateIndiana
Coordinates39.55811, -85.35821
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionApril 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.1 US tons
Inventory rating35.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length30 ft (9 m)
Longest span28 ft (8.4 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2020)
Projected traffic625 by 2040
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$751,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 450E over Br Little Flatrock River built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1972.

What condition is CR 450E over Br Little 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 April 2024.

How much traffic does CR 450E over Br Little Flatrock River carry?

About 450 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is CR 450E over Br Little Flatrock River?

The structure is 30 ft (9 m) long with a longest span of 28 ft (8.4 m) and a deck 24 ft wide.

Who owns CR 450E over Br Little Flatrock River?

It is owned by the County Highway Agency.