US Bridges

Yankee ST over Markley Run

Good

Knox County, Ohio · 0.1 MI East of Roberts RD · Structure no. 4231902

Built
2008
17 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
374
2015 count
Owner
County
County Highway Agency

About this bridge

Yankee ST over Markley Run is a prestressed concrete box beam or girders - multiple carrying Yankee ST over Markley Run in Knox County, Ohio. It was built in 2008, so it is 17 years old, younger than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 374 vehicles a day, roughly 7% of them trucks, projected to reach 519 by 2042. The structure is 44 ft (13.4 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesYankee ST
CrossesMarkley Run
Location0.1 MI East of Roberts RD
RouteCounty Highway C0055
CountyKnox County
StateOhio
Coordinates40.53333, -82.51667
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating53.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length44 ft (13.4 m)
Longest span39 ft (11.9 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic374 (2015)
Projected traffic519 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Yankee ST over Markley Run built?

It was built in 2008, making it 17 years old in 2025.

What condition is Yankee ST over Markley Run 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 April 2024.

How much traffic does Yankee ST over Markley Run carry?

About 374 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Yankee ST over Markley Run?

The structure is 44 ft (13.4 m) long with a longest span of 39 ft (11.9 m) and a deck 20 ft wide.

Who owns Yankee ST over Markley Run?

It is owned by the County Highway Agency.