US Bridges

Roberts Road over Markley Run

FairPosted for load

Knox County, Ohio · 0.1 MI North of CR 55 · Structure no. 4235029

Built
1904
121 years old, rebuilt 1989
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
324
2015 count
Owner
County
County Highway Agency

About this bridge

Roberts Road over Markley Run is a steel stringer/multi-beam or girder carrying Roberts Road over Markley Run in Knox County, Ohio. It was built in 1904 and reconstructed in 1989, so it is 121 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 324 vehicles a day, roughly 7% of them trucks, projected to reach 450 by 2042. The structure is 29 ft (8.8 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRoberts Road
CrossesMarkley Run
Location0.1 MI North of CR 55
RouteCounty Highway 379
CountyKnox County
StateOhio
Coordinates40.53373, -82.52468
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.9 US tons
Inventory rating10.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic324 (2015)
Projected traffic450 by 2042
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$61,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Roberts Road over Markley Run built?

It was built in 1904, making it 121 years old in 2025. It was reconstructed in 1989.

What condition is Roberts Road over Markley Run 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 April 2024.

How much traffic does Roberts Road over Markley Run carry?

About 324 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Roberts Road over Markley Run?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 18 ft wide.

Who owns Roberts Road over Markley Run?

It is owned by the County Highway Agency.