US Bridges

SR 241 over Plass Ditch

Good

Knox County, Indiana · 00.80 N US 41 · Structure no. 030010

Built
1968
57 years old, rebuilt 2004
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
1,321
2004 count
Owner
State
State Highway Agency

About this bridge

SR 241 over Plass Ditch is a prestressed concrete continuous box beam or girders - multiple carrying SR 241 over Plass Ditch in Knox County, Indiana. It was built in 1968 and reconstructed in 2004, 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 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 1,321 vehicles a day, roughly 10% of them trucks, projected to reach 2,193 by 2030. The structure is 121 ft (36.8 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesSR 241
CrossesPlass Ditch
Location00.80 N US 41
RouteState Highway 241
CountyKnox County
StateIndiana
Coordinates38.51982, -87.52822
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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.8 m)
Longest span40 ft (12.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,321 (2004)
Projected traffic2,193 by 2030
Trucks10%
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 241 over Plass Ditch built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2004.

What condition is SR 241 over Plass 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 241 over Plass Ditch carry?

About 1,321 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is SR 241 over Plass Ditch?

The structure is 121 ft (36.8 m) long with a longest span of 40 ft (12.1 m) and a deck 30 ft wide.

Who owns SR 241 over Plass Ditch?

It is owned by the State Highway Agency.