US Bridges

Smithson Road over Johnson Ditch

Fair

White County, Indiana · 00.53 W CR 100 E · Structure no. 9100211

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
135
2024 count
Owner
County
County Highway Agency

About this bridge

Smithson Road over Johnson Ditch is a prestressed concrete box beam or girders - multiple carrying Smithson Road over Johnson Ditch in White County, Indiana. It was built in 1985, so it is 40 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 135 vehicles a day, roughly 10% of them trucks, projected to reach 165 by 2044. The structure is 60 ft (18.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSmithson Road
CrossesJohnson Ditch
Location00.53 W CR 100 E
RouteCounty Highway 0
CountyWhite County
StateIndiana
Coordinates40.71417, -86.86156
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length60 ft (18.2 m)
Longest span55 ft (16.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2024)
Projected traffic165 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Smithson Road over Johnson Ditch built?

It was built in 1985, making it 40 years old in 2025.

What condition is Smithson Road over Johnson 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 October 2024.

How much traffic does Smithson Road over Johnson Ditch carry?

About 135 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Smithson Road over Johnson Ditch?

The structure is 60 ft (18.2 m) long with a longest span of 55 ft (16.7 m) and a deck 24 ft wide.

Who owns Smithson Road over Johnson Ditch?

It is owned by the County Highway Agency.