Early bridges were simply logs stretched across supporting timbers. The span of the bridge was limited to the length of the supporting timber. As development continued, builders soon learned to create longer spans by using trusses, arches, and joined stringers. Like many other 18th century structures, these bridges were made almost entirely of wood. This created a problem. The joints of these bridges would soon deteriorate when exposed to the harsh elements of nature. Someth

The covered bridge might not be the greatest of bridges now, but it helped in the transportation of many things in the past. Today, they serve more as a memorial and as a remembrance of the past. It is good to know that we can still appreciate our past and know that we have advanced for the better.

The first partially covered bridge was built, tested, and used over the Mohawk River in New York in 1808. It was then upgraded and was completely covered in 1825 and 1830. The word about covered bridges soon spread out throughout the country and thousands were then built all over in the 19th century.

There have been many covered bridges but some have impressed more than others. The Holliwell Covered Bridge was built in 1880 by Benton Jones. It is the longest covered bridge. It measures a total of 122 feet. It stands in its original location over the Middle River southeast of Winterset in Iowa. Holliwell needed to be renovate

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