US Bridges

SR 46 over Whitewater River

PoorPosted for load

Dearborn County, Indiana · 00.44 W US 52 · Structure no. 017540

Built
1937
88 years old, rebuilt 1985
Condition
Poor
inspected September 2024
Type
Truss - Thru
Steel
Length
886 ft
5 main spans
Daily traffic
4,142
2021 count
Owner
State
State Highway Agency

About this bridge

SR 46 over Whitewater River is a steel truss - thru carrying SR 46 over Whitewater River in Dearborn County, Indiana. It was built in 1937 and reconstructed in 1985, so it is 88 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 4,142 vehicles a day, roughly 10% of them trucks, projected to reach 4,505 by 2033. The structure is 886 ft (270 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSR 46
CrossesWhitewater River
Location00.44 W US 52
RouteState Highway 46
StateIndiana
Coordinates39.28004, -84.87403
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for other load-capacity 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating27.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length886 ft (270 m)
Longest span175 ft (53.3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic4,142 (2021)
Projected traffic4,505 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 46 over Whitewater River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1985.

What condition is SR 46 over Whitewater River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does SR 46 over Whitewater River carry?

About 4,142 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is SR 46 over Whitewater River?

The structure is 886 ft (270 m) long with a longest span of 175 ft (53.3 m) and a deck 25 ft wide.

Who owns SR 46 over Whitewater River?

It is owned by the State Highway Agency.