TECHNICAL RELEASE 12-R9
INTRODUCTION: Loggers and landowners faced with installing road crossings of fish-bearing streams typically use bridges or steel arch culverts to maintain stream bed integrity and fish passage. Northeast Region FRA member Prentiss & Carlisle recently installed a new product, Enviro-Span’s Modular Plastic Culvert, that offers easier installation and more flexibility in crossing design than traditional alternatives.
GENERAL FEATURES: The 7-foot-span heavy-duty plastic arch sections come in 42 inch widths. The bottom flange of the culvert sections is shaped to fit over a log to provide a firm footing, as an alternative to the poured concrete used in some applications. Wedge span elbow sections allow installations to curve to fit the stream bed and terrain better without additional disturbance. Sections are joined by connectors made from the same material. The installations can be permanent, or the sections can be reused for other crossings.
INSTALLATION / APPLICATION: The lightweight material and sectional design allow simple installation, requiring less time, equipment, and manpower than traditional stream and ditch crossing methods require.
MODULAR PLASTIC ARCH CULVERT
SPECIFICATIONS AND COST:
Manufactured of a durable liquid molding resin, the Enviro-Span system comes in 7-foot-span sections, 42 inches in width. For complete specification information, see www.enviro-span.com/index.html. For more detailed information, including cost, contact (in the Northeast U.S. and Maritime Canada), Soleno, Inc., Saint-Jean-sur-Richelieu, Québec, Canada (877-633-7473) ; or (elsewhere in North America) Enviro-Span, 1250 Gateway Drive, Gallatin, Tennessee 37066 (615-649-3700).
The Enviro-Span Modular Culvert System is a flexible, easily installed water crossing suitable for use over fish-bearing and environmentally sensitive streams without disturbing the stream bed.
Reviewed by: Rick Meyer Appalachian/Southwide Region Manager
Appalachian/Southwide Region Manager