US Bridges

Long Road over Roberson Ditch

Fair

Knox County, Indiana · 00.98 S of Golf Course Ro · Structure no. 4200163

Built
1991
34 years old
Condition
Fair
inspected September 2023
Type
Channel Beam
Concrete
Length
42 ft
1 main span
Daily traffic
130
2015 count
Owner
County
County Highway Agency

About this bridge

Long Road over Roberson Ditch is a concrete channel beam carrying Long Road over Roberson Ditch in Knox County, Indiana. It was built in 1991, so it is 34 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 130 vehicles a day, roughly 4% of them trucks, projected to reach 170 by 2035. The structure is 42 ft (12.8 m) long and 22 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesLong Road
CrossesRoberson Ditch
Location00.98 S of Golf Course Ro
RouteCounty Highway 0
CountyKnox County
StateIndiana
Coordinates38.74156, -87.34918
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating25.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span36 ft (10.9 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2015)
Projected traffic170 by 2035
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Long Road over Roberson Ditch built?

It was built in 1991, making it 34 years old in 2025.

What condition is Long Road over Roberson 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 Long Road over Roberson Ditch carry?

About 130 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Long Road over Roberson Ditch?

The structure is 42 ft (12.8 m) long with a longest span of 36 ft (10.9 m) and a deck 22 ft wide.

Who owns Long Road over Roberson Ditch?

It is owned by the County Highway Agency.