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Sentinel Structures, Inc. 
477 S. Peck Ave 
P.O. Box 128 
Peshtigo, WI 54157 
Phone (715) 582-4544 
Fax (715) 582-4932 
Email engr@sentinelstructures.com
http://www.sentinelstructures.com
  Why covered bridges?  They were not to protect a traveler, his horse, or a load of hay. Covered bridges were not to protect a horse from shying at the sight of running water. Used as a haven from storms they may also have served as a romantic stop for a couple coming home from a church social. 

Bridges were covered to protect the wood.  Preservatives for wood were not available; once they did exist it essentially eliminated the need for covered bridges. 

Plank floor, truss bottom chords and floor beams require treatment if it is known that these members will be alternately wet and dry from road traffic.  As in buildings with roof cover, preservative treatment should not be a normal requirement in covered bridges.

     Smith Rapids Covered Bridge
     Chequamegon National Forest
     South Fork Flambeau River
     Price County, WI

Covered Bridges Page 2 
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