US Bridges

SR 39 over Harp Ditch #1

Fair

White County, Indiana · 01.82 N SR 16 · Structure no. 013390

Built
1950
75 years old, rebuilt 2001
Condition
Fair
inspected December 2023
Type
Arch - Deck
Concrete
Length
32 ft
1 main span
Daily traffic
1,456
2004 count
Owner
State
State Highway Agency

About this bridge

SR 39 over Harp Ditch #1 is a concrete arch - deck carrying SR 39 over Harp Ditch #1 in White County, Indiana. It was built in 1950 and reconstructed in 2001, so it is 75 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.

It carries about 1,456 vehicles a day, roughly 10% of them trucks, projected to reach 2,416 by 2030. The structure is 32 ft (9.7 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 39
CrossesHarp Ditch #1
Location01.82 N SR 16
RouteState Highway 39
CountyWhite County
StateIndiana
Coordinates40.90998, -86.77552
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating48.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length32 ft (9.7 m)
Longest span30 ft (9.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,456 (2004)
Projected traffic2,416 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Harp Ditch #1 built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2001.

What condition is SR 39 over Harp Ditch #1 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 Harp Ditch #1 carry?

About 1,456 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is SR 39 over Harp Ditch #1?

The structure is 32 ft (9.7 m) long with a longest span of 30 ft (9.1 m) and a deck 39 ft wide.

Who owns SR 39 over Harp Ditch #1?

It is owned by the State Highway Agency.