US Bridges

SR 32 over Threldkeld Ditch

Fair

Boone County, Indiana · 02.59 W SR 75 · Structure no. 010520

Built
1983
42 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
67 ft
3 main spans
Daily traffic
5,070
2014 count
Owner
State
State Highway Agency

About this bridge

SR 32 over Threldkeld Ditch is a concrete continuous slab carrying SR 32 over Threldkeld Ditch in Boone County, Indiana. It was built in 1983, so it is 42 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 5,070 vehicles a day, roughly 23% of them trucks, projected to reach 6,603 by 2034. The structure is 67 ft (20.4 m) long and 46 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 32
CrossesThreldkeld Ditch
Location02.59 W SR 75
RouteState Highway 32
CountyBoone County
StateIndiana
Coordinates40.05463, -86.66828
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span25 ft (7.6 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,070 (2014)
Projected traffic6,603 by 2034
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 32 over Threldkeld Ditch built?

It was built in 1983, making it 42 years old in 2025.

What condition is SR 32 over Threldkeld 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 February 2024.

How much traffic does SR 32 over Threldkeld Ditch carry?

About 5,070 vehicles per day (2014 count), of which roughly 23% are trucks.

How long is SR 32 over Threldkeld Ditch?

The structure is 67 ft (20.4 m) long with a longest span of 25 ft (7.6 m) and a deck 46 ft wide.

Who owns SR 32 over Threldkeld Ditch?

It is owned by the State Highway Agency.