US Bridges

CR 100N over Branch of Flatrock River

Fair

Rush County, Indiana · 00.60 E of CR 225 W · Structure no. 7000103

Built
1975
50 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
125
2019 count
Owner
County
County Highway Agency

About this bridge

CR 100N over Branch of Flatrock River is a prestressed concrete box beam or girders - multiple carrying CR 100N over Branch of Flatrock River in Rush County, Indiana. It was built in 1975, so it is 50 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 125 vehicles a day, roughly 5% of them trucks, projected to reach 175 by 2039. The structure is 28 ft (8.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 100N
CrossesBranch of Flatrock River
Location00.60 E of CR 225 W
RouteCounty Highway 162
CountyRush County
StateIndiana
Coordinates39.62576, -85.47618
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.4 US tons
Inventory rating40.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length28 ft (8.6 m)
Longest span26 ft (8 m)
Deck width24 ft (7.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2019)
Projected traffic175 by 2039
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 100N over Branch of Flatrock River built?

It was built in 1975, making it 50 years old in 2025.

What condition is CR 100N over Branch of Flatrock River 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 April 2023.

How much traffic does CR 100N over Branch of Flatrock River carry?

About 125 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is CR 100N over Branch of Flatrock River?

The structure is 28 ft (8.6 m) long with a longest span of 26 ft (8 m) and a deck 24 ft wide.

Who owns CR 100N over Branch of Flatrock River?

It is owned by the County Highway Agency.