US Bridges

CR 100E over Rock Creek

Fair

Carroll County, Indiana · 00.04 N of CR 700 N · Structure no. 0800075

Built
1966
59 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
145
2011 count
Owner
County
County Highway Agency

About this bridge

CR 100E over Rock Creek is a prestressed concrete box beam or girders - multiple carrying CR 100E over Rock Creek in Carroll County, Indiana. It was built in 1966, so it is 59 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 145 vehicles a day, roughly 5% of them trucks, projected to reach 177 by 2031. The structure is 80 ft (24.3 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 100E
CrossesRock Creek
Location00.04 N of CR 700 N
RouteCounty Highway 52
CountyCarroll County
StateIndiana
Coordinates40.64912, -86.5061
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.7 US tons
Inventory rating28 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length80 ft (24.3 m)
Longest span77 ft (23.5 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic145 (2011)
Projected traffic177 by 2031
Trucks5%
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 100E over Rock Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is CR 100E 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 May 2023.

How much traffic does CR 100E over Rock Creek carry?

About 145 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is CR 100E over Rock Creek?

The structure is 80 ft (24.3 m) long with a longest span of 77 ft (23.5 m) and a deck 21 ft wide.

Who owns CR 100E over Rock Creek?

It is owned by the County Highway Agency.