US Bridges

SR 121 over Unt Whitewater River

Fair

Franklin County, Indiana · 04.97 N US 52 · Structure no. 076632

Built
2009
16 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
1,005
2021 count
Owner
State
State Highway Agency

About this bridge

SR 121 over Unt Whitewater River is a concrete culvert carrying SR 121 over Unt Whitewater River in Franklin County, Indiana. It was built in 2009, so it is 16 years old, younger 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 1,005 vehicles a day, roughly 12% of them trucks, projected to reach 2,026 by 2032. The structure is 28 ft (8.5 m) long and 41 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSR 121
CrossesUnt Whitewater River
Location04.97 N US 52
RouteState Highway 121
CountyFranklin County
StateIndiana
Coordinates39.50639, -85.18351
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,005 (2021)
Projected traffic2,026 by 2032
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 121 over Unt Whitewater River built?

It was built in 2009, making it 16 years old in 2025.

What condition is SR 121 over Unt Whitewater 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 December 2024.

How much traffic does SR 121 over Unt Whitewater River carry?

About 1,005 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is SR 121 over Unt Whitewater River?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 41 ft wide.

Who owns SR 121 over Unt Whitewater River?

It is owned by the State Highway Agency.