US Bridges

CR 575S over Rock Creek

FairPosted for load

Warren County, Indiana · 00.25 E of Carlile RD · Structure no. 8600023

Built
1942
83 years old, rebuilt 1985
Condition
Fair
inspected August 2024
Type
Truss - Thru
Steel
Length
75 ft
1 main span
Daily traffic
120
2014 count
Owner
County
County Highway Agency

About this bridge

CR 575S over Rock Creek is a steel truss - thru carrying CR 575S over Rock Creek in Warren County, Indiana. It was built in 1942 and reconstructed in 1985, so it is 83 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 120 vehicles a day, roughly 3% of them trucks, projected to reach 150 by 2034. The structure is 75 ft (23 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 575S
CrossesRock Creek
Location00.25 E of Carlile RD
RouteCounty Highway 74
CountyWarren County
StateIndiana
Coordinates40.23503, -87.34762
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating15.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length75 ft (23 m)
Longest span72 ft (22 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2014)
Projected traffic150 by 2034
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 CR 575S over Rock Creek built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1985.

What condition is CR 575S over Rock Creek 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 August 2024.

How much traffic does CR 575S over Rock Creek carry?

About 120 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is CR 575S over Rock Creek?

The structure is 75 ft (23 m) long with a longest span of 72 ft (22 m) and a deck 20 ft wide.

Who owns CR 575S over Rock Creek?

It is owned by the County Highway Agency.