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The Public Right-of-Way Accessibility Guidelines (PROWAG) rulemaking has concluded. The PROWAG final rule has been published in the Federal Register. Please visit the Access Board’s PROWAG page for the guidelines.

Stabilized Engineered Wood Fiber for Accessible Trails


Installation and Serviceability Results: Governor Dodge State Park, Wisconsin

November 2004

USDA Forest Service and U.S. Access Board

Prepared by:
Theodore L. Laufenberg
USDA-Forest Service
Forest Products Laboratory
One Gifford Pinchot Drive, Madison, WI 53726

The project was conducted cooperatively with the United States Architectural and Transportation Accessibility Compliance Board (U.S. Access Board).

Laufenberg, Theodore L. 2004. Stabilized engineered wood fiber for accessible trails—Installation and serviceability results: Governor Dodge State Park , Wisconsin . Gen. Tech. Rep. FPL-GTR-155. Madison , WI : U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.\

A limited number of free copies of this publication are available to the public from the Forest Products Laboratory, One Gifford Pinchot Drive , Madison , WI 53726–2398 . This publication is also available online at Laboratory publications are sent to hundreds of libraries in the United States and elsewhere.

The Forest Products Laboratory is maintained in cooperation with the University of Wisconsin.

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We gratefully acknowledge Bill Botten, U.S. Architectural and Transportation Compliance Board, for guidance in initiating Phase III of the development of the stabilized engineered wood fiber (EWF) concept, and Ted Illjes and Bob Zeager of Zeager Bros. Inc., Middletown, Pennsylvania, for performing the impact tests.

Zeager Bros. Inc. and Beneficial Designs, Inc. (Minden, Nevada), provided the apparatus for the impact test and the rotational penetrometer, as well as training in their use. Thanks to Zeager Bros. Inc. for the donation of EWF and Midwest Industrial Supply (Canton, Ohio) for the donation of Soil-Sement.

We are grateful to the Wisconsin Department of Natural Resources for offering park areas and trails for this study. In particular, we appreciate the guidance and support of An-thonette Gilpatrick, ADA Coordinator; Kathy Gruentzel, Park Manager; and the staff of Governor Dodge State Park for installing and monitoring the trail and beachwalk sites. Special thanks to Jane and Steve Schmieding, Carl Syftestad, Lloyd Currier, Nancy Keen, Vicki Herian, Mary Collet, and other members of the FPL staff, for their support of this effort.