Mill Road Bowstring Bridge

Description of the property

together to form a single rigid hollow tube. Wooden planking covers the roadway and is supported by iron beams, which are in turn CONDITION UNEXPOSED EXCELLENT FAIR RUINS GOOD The overall width of the structure is about nineteen feet with a roadway that is sixteen although there are no overhead bracing members.At intervals of about eight feet, most unique elements of this bridge and are composed of four iron plates fastened rise to a height of six feet six inches in the center of the bridge and are braced The bridge is about seventy five feet long, with a clear span of about seventy feet.

fill to achieve a height of about fifteen feet above the stream level.A metal plate CHECK ONE The two compression tubes bear the name of the Phoenix Iron Co.,Phila.,Pa.at regular by new guardrails or damaged by collisions. a gradual embankment from the west toward the creek.Trees and brush line the banks of laterally by a series of small diagonal struts on each side and by the roadway itself, a mile northwest of here. rusting, although the structure itself appears to be intact and has not been altered X_UNALTERED isa woods and to the south isa farmhouse and barns.The village of Bladensburg is about the creek, but fields are located in the flood plain adjacent to the stream.

To the north DATE The Mill Road Bridge is an iron bowstring arch-truss bridge that spans Wakatomika Creek The bridge is now closed to vehicular traffic and is in poor condition.Much of the outward intervals along their length anda patent date of June 16,1862.They are perhaps the identifies the builder and has a patent date of April (last digit is missing). - PERIOD AREAS OF

Statement of significance

This bridge is a rare example of a metal bowstring arch-truss bridge, a type that Whipple in 1841. The Wrought Iron Bridge Company of Cantón, fabricators of this bridge, When this bridge was constructed here, an active mill and other structures served to 1400-1499 1500-1599 1700-1799 EDUCATION ART RELIGION ARCHEOLOGY-HISTORIC SCIENCE ARCHITECTURE LAW ARCHEOLOGY-PREHISTORIC AGRICULTURE 1900- THEATER TRANSPORTATION SIGNIFICANCE SCULPTURE MILITARY _COMMUNICATIONS LITERATURE INDUSTRY the handful of bowstring arch-truss bridges that survive today in Ohio. _EXPLORATION/SETTLEMENT reinforced concrete, coupled with greater weight requirements have virtually eliminated durability, resistance to corrosiveness, and working loads for wrought iron structures.

The Phoenix Iron Company was a major innovator in the use of iron in engineering bridge had been supplanted by more durable iron box trusses.High strength steel and house remains in this vicinity along this lightly travelled road.The decline of the Wrought Iron Bridge Company patents. By the turn of the century, the bowstring arch-truss this company's patented designs for compression members, but soon after, invented their settlement and the cessation of the mill operation have enabled this bridge to be among single, double and triple intersection Pratt through trusses; combination trusses; and bridge company with patented partsbya nationally significant iron fabricator.

Southern, and Southwestern states.Their Book of Designs of Wrought Iron Bridges one of the leading and widest ranging metal bridge fabrication firms in the nation. represents an import^segment of engineering history, that was constructed by a leading _CONSERVATION They circulated agents and erected structures throughout the New England, Eastern Midwest, 70's.Job Abbott was the vice-president and chief engineer and Michael Adler was the history of iron bridge buildings in Europe and America, and articles on the strength, this type of bridge in Ohio. -PHILOSOPHY published in 1874 included a variety of bowstring arches; deck arches; low trusses; -_ECONOMICS SPECIFIC DATES c.

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