US Bridges

SR 159 over Tilley Ditch

Good

Knox County, Indiana · 02.49 N SR 67 · Structure no. 028051

Built
2022
3 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
52 ft
1 main span
Daily traffic
1,965
2022 count
Owner
State
State Highway Agency

About this bridge

SR 159 over Tilley Ditch is a concrete culvert carrying SR 159 over Tilley Ditch in Knox County, Indiana. It was built in 2022, so it is 3 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 1,965 vehicles a day, roughly 4% of them trucks, projected to reach 1,974 by 2042. The structure is 52 ft (16 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 159
CrossesTilley Ditch
Location02.49 N SR 67
RouteState Highway 159
CountyKnox County
StateIndiana
Coordinates38.81501, -87.31582
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length52 ft (16 m)
Longest span50 ft (15.2 m)
Deck width42 ft (12.8 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,965 (2022)
Projected traffic1,974 by 2042
Trucks4%
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 159 over Tilley Ditch built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR 159 over Tilley 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 August 2023.

How much traffic does SR 159 over Tilley Ditch carry?

About 1,965 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is SR 159 over Tilley Ditch?

The structure is 52 ft (16 m) long with a longest span of 50 ft (15.2 m) and a deck 42 ft wide.

Who owns SR 159 over Tilley Ditch?

It is owned by the State Highway Agency.