US Bridges

SR 75 over Boyles Ditch

Fair

Clinton County, Indiana · 04.15 S SR 26 · Structure no. 024940

Built
1968
57 years old, rebuilt 1980
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
1,279
2021 count
Owner
State
State Highway Agency

About this bridge

SR 75 over Boyles Ditch is a prestressed concrete box beam or girders - multiple carrying SR 75 over Boyles Ditch in Clinton County, Indiana. It was built in 1968 and reconstructed in 1980, so it is 57 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 1,279 vehicles a day, roughly 9% of them trucks, projected to reach 1,919 by 2034. The structure is 32 ft (9.7 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR 75
CrossesBoyles Ditch
Location04.15 S SR 26
RouteState Highway 75
CountyClinton County
StateIndiana
Coordinates40.35857, -86.52196
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating56.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.7 m)
Longest span30 ft (9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,279 (2021)
Projected traffic1,919 by 2034
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 75 over Boyles Ditch built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1980.

What condition is SR 75 over Boyles Ditch 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 75 over Boyles Ditch carry?

About 1,279 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is SR 75 over Boyles Ditch?

The structure is 32 ft (9.7 m) long with a longest span of 30 ft (9 m) and a deck 30 ft wide.

Who owns SR 75 over Boyles Ditch?

It is owned by the State Highway Agency.