The Old Enon Road Stone Arch Culvert is a historic limestone

Limestone

Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....

 bridge in southern Clark County

Clark County, Ohio

As of the census of 2000, there were 144,742 people, 56,648 households, and 39,370 families residing in the county. The population density was 362 people per square mile . There were 61,056 housing units at an average density of 153 per square mile...

, Ohio

Ohio

Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It carries Rocky Point Road over Mud Run, a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the Mad River

Mad River (Ohio)

The Mad River is a stream located in the west central part of the U.S. state of Ohio. It flows from Logan County to downtown Dayton, where it meets the Great Miami River. The stream flows southwest from its source near Campbell Hill through West Liberty, along U.S...

, just west of its intersection with Old Mill Road. Located approximately 3.5 miles (5.6 km) east of Enon

Enon, Ohio

Enon is a village in Clark County, Ohio, United States. The population was 2,638 at the 2000 census. It is part of the Springfield, Ohio Metropolitan Statistical Area.Enon is the headquarters of the Speedway SuperAmerica gas station chain....

 in eastern Mad River Township

Mad River Township, Clark County, Ohio

Mad River Township is one of the ten townships of Clark County, Ohio, United States. The 2000 census found 11,828 people in the township, 9,190 of whom lived in the unincorporated portions of the township.-Geography:...

, it was constructed under the leadership of stonemason

Stonemasonry

The craft of stonemasonry has existed since the dawn of civilization - creating buildings, structures, and sculpture using stone from the earth. These materials have been used to construct many of the long-lasting, ancient monuments, artifacts, cathedrals, and cities in a wide variety of cultures...

 Samuel Taylor in 1871. In the past, the region was dotten with stone culvert

Culvert

A culvert is a device used to channel water. It may be used to allow water to pass underneath a road, railway, or embankment. Culverts can be made of many different materials; steel, polyvinyl chloride and concrete are the most common...

s, which were built in the nineteenth and early twentieth centuries to carry roads over small watercourses. Today, few stone culverts survive in Ohio; the Old Enon Road culvert is both Clark County's only such bridge in daily use and the oldest bridge of any type still open to daily traffic throughout the county.

In 2009, the culvert was listed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

. It qualified because of its distinctive engineering, which was seen as representing a significant and well-preserved aspect of local historic architecture.