US Bridges

CR 900S over Flatrock River

FairPosted for load

Rush County, Indiana · 00.01 E of CR 650 W · Structure no. 7000176

Built
1886
139 years old, rebuilt 2010
Condition
Fair
inspected April 2023
Type
Truss - Thru
Wood or Timber
Length
318 ft
2 main spans
Daily traffic
225
2019 count
Owner
County
County Highway Agency

About this bridge

CR 900S over Flatrock River is a wood or timber truss - thru carrying CR 900S over Flatrock River in Rush County, Indiana. It was built in 1886 and reconstructed in 2010, so it is 139 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 225 vehicles a day, roughly 3% of them trucks, projected to reach 310 by 2039. The structure is 318 ft (97 m) long and 15 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 900S
CrossesFlatrock River
Location00.01 E of CR 650 W
RouteCounty Highway 273
CountyRush County
StateIndiana
Coordinates39.48493, -85.55484
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating9.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length318 ft (97 m)
Longest span162 ft (49.3 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck12 ft (3.8 m)

Traffic and service

Average daily traffic225 (2019)
Projected traffic310 by 2039
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 900S over Flatrock River built?

It was built in 1886, making it 139 years old in 2025. It was reconstructed in 2010.

What condition is CR 900S over 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 900S over Flatrock River carry?

About 225 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is CR 900S over Flatrock River?

The structure is 318 ft (97 m) long with a longest span of 162 ft (49.3 m) and a deck 15 ft wide.

Who owns CR 900S over Flatrock River?

It is owned by the County Highway Agency.