US Bridges

Oaktown Road over Branch of Tilly Ditch

Fair

Knox County, Indiana · 00.78 N of Kuhn Road · Structure no. 4200202

Built
1915
110 years old, rebuilt 1993
Condition
Fair
inspected September 2023
Type
Other
Steel
Length
50 ft
1 main span
Daily traffic
200
2015 count
Owner
County
County Highway Agency

About this bridge

Oaktown Road over Branch of Tilly Ditch is a steel other carrying Oaktown Road over Branch of Tilly Ditch in Knox County, Indiana. It was built in 1915 and reconstructed in 1993, so it is 110 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 260 by 2035. The structure is 50 ft (15.2 m) long and 20 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesOaktown Road
CrossesBranch of Tilly Ditch
Location00.78 N of Kuhn Road
RouteCounty Highway 0
CountyKnox County
StateIndiana
Coordinates38.81068, -87.35048
Functional classRural Minor 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 inspectionSeptember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating35.9 US tons

Structure

Structure typeOther
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span36 ft (11.1 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2015)
Projected traffic260 by 2035
Trucks2%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Oaktown Road over Branch of Tilly Ditch built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1993.

What condition is Oaktown Road over Branch of Tilly 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 September 2023.

How much traffic does Oaktown Road over Branch of Tilly Ditch carry?

About 200 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Oaktown Road over Branch of Tilly Ditch?

The structure is 50 ft (15.2 m) long with a longest span of 36 ft (11.1 m) and a deck 20 ft wide.

Who owns Oaktown Road over Branch of Tilly Ditch?

It is owned by the County Highway Agency.