Saturday, October 25, 2014

12-R-9: Modular Plastic Arch Culvert

TECHNICAL RELEASE 12-R9

Bridges: culverts

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.

ModularPlastic_Fig1Fig. 1: Carrying the culvert section to the installation site.ModularPlastic_Fig2Fig. 2: Installing the first section on the log footing.

 

 

 

 

 

 

 

 

 

 

ModularPlastic_fig3Fig. 3: Installing additional sections.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.

 

 

MOD_fig4Fig. 4: Installed Enviro-Span arch culvert, awaiting backfill.

MOD_fig5Fig. 5: Backfilling the completed installation.

 

 

 

 

 

 

 

 

 

 

 

 

 

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).

CONCLUSION:

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.

Brian Souers Treeline, Inc. Lincoln, Maine 207-794-2044 This email address is being protected from spambots. You need JavaScript enabled to view it.

Reviewed by: Rick Meyer Appalachian/Southwide Region Manager

 

Tim Beaulieu Prentiss & Carlisle W. Enfield, Maine 207-732-3354 This email address is being protected from spambots. You need JavaScript enabled to view it.

Reviewed by:
Rick Meyer
Appalachian/Southwide Region Manager



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