US Bridges

SR 71 over Bowton Ditch

Good

Benton County, Indiana · 03.12 S US 24 · Structure no. 024720

Built
1982
43 years old, rebuilt 2016
Condition
Good
inspected November 2023
Type
Slab
Concrete Continuous
Length
62 ft
3 main spans
Daily traffic
256
2013 count
Owner
State
State Highway Agency

About this bridge

SR 71 over Bowton Ditch is a concrete continuous slab carrying SR 71 over Bowton Ditch in Benton County, Indiana. It was built in 1982 and reconstructed in 2016, so it is 43 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 256 vehicles a day, roughly 7% of them trucks, projected to reach 392 by 2035. The structure is 62 ft (18.8 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 71
CrossesBowton Ditch
Location03.12 S US 24
RouteState Highway 71
StateIndiana
Coordinates40.72424, -87.49148
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length62 ft (18.8 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic256 (2013)
Projected traffic392 by 2035
Trucks7%
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 71 over Bowton Ditch built?

It was built in 1982, making it 43 years old in 2025. It was reconstructed in 2016.

What condition is SR 71 over Bowton Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does SR 71 over Bowton Ditch carry?

About 256 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is SR 71 over Bowton Ditch?

The structure is 62 ft (18.8 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns SR 71 over Bowton Ditch?

It is owned by the State Highway Agency.