US Bridges

SR 39 over Carnahan Ditch No 2

Fair

White County, Indiana · 02.46 S SR 16 · Structure no. 013380

Built
1938
87 years old, rebuilt 1968
Condition
Fair
inspected December 2023
Type
Arch - Deck
Concrete
Length
27 ft
1 main span
Daily traffic
2,665
2020 count
Owner
State
State Highway Agency

About this bridge

SR 39 over Carnahan Ditch No 2 is a concrete arch - deck carrying SR 39 over Carnahan Ditch No 2 in White County, Indiana. It was built in 1938 and reconstructed in 1968, so it is 87 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 2,665 vehicles a day, roughly 9% of them trucks, projected to reach 5,458 by 2030. The structure is 27 ft (8.2 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 39
CrossesCarnahan Ditch No 2
Location02.46 S SR 16
RouteState Highway 39
CountyWhite County
StateIndiana
Coordinates40.84756, -86.74554
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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.8 US tons
Inventory rating72.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width39 ft (11.9 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,665 (2020)
Projected traffic5,458 by 2030
Trucks9%
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

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 39 over Carnahan Ditch No 2 built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1968.

What condition is SR 39 over Carnahan Ditch No 2 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 2023.

How much traffic does SR 39 over Carnahan Ditch No 2 carry?

About 2,665 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SR 39 over Carnahan Ditch No 2?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 39 ft wide.

Who owns SR 39 over Carnahan Ditch No 2?

It is owned by the State Highway Agency.