US Bridges

SR 13 over Markley Run

Good

Knox County, Ohio · 1.2 M N of JCT SR 546 · Structure no. 4200934

Built
1963
62 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
55 ft
3 main spans
Daily traffic
4,590
2015 count
Owner
State
State Highway Agency

About this bridge

SR 13 over Markley Run is a concrete continuous slab carrying SR 13 over Markley Run in Knox County, Ohio. It was built in 1963, so it is 62 years old, older 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,590 vehicles a day, roughly 14% of them trucks, projected to reach 6,371 by 2035. The structure is 55 ft (16.8 m) long and 44 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesSR 13
CrossesMarkley Run
Location1.2 M N of JCT SR 546
RouteState Highway 13
StateOhio
Coordinates40.54013, -82.54289
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating53.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length55 ft (16.8 m)
Longest span20 ft (6.1 m)
Deck width44 ft (13.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,590 (2015)
Projected traffic6,371 by 2035
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

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 13 over Markley Run built?

It was built in 1963, making it 62 years old in 2025.

What condition is SR 13 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 March 2024.

How much traffic does SR 13 over Markley Run carry?

About 4,590 vehicles per day (2015 count), of which roughly 14% are trucks.

How long is SR 13 over Markley Run?

The structure is 55 ft (16.8 m) long with a longest span of 20 ft (6.1 m) and a deck 44 ft wide.

Who owns SR 13 over Markley Run?

It is owned by the State Highway Agency.