Why Harden Trails?

What are our options?

Surface Modification

Trail Solutions: IMBA’s Guide to Building Sweet SingletrTaPcDk1,7204000444

Foundation Modification

Trail Solutions: IMBA’s Guide to Building Sweet SingletrTaPcDk1,7204000444

• § Glacial Loam and Loess

• § Saturates easily

• § Constructed during wettest months of the season – bad idea

• § Used hybridized technique:
• § Grading & Compaction

• Synthetic Fabric
• § Aggregate and Compaction

Collaborative Enhancement to Improve Phase I

 4

Surface Modification

-Minimal Grubbing

-Slot Trench and cap with

Native gravels Imported Loam

-Additional imported Rock Causeway added for technical challenge

Elevated Timber Structures

Image from: www.benvironment.com

Image from: www.pinkbike.com

Microtopograpahy Modification

Photo by Loren Holmes, Alaska DispatcThPDN1e70w4s044

Pavers & Creative Materials

Image from: FreeAssociationdesign.wordpress.com                                 TPD1704044

Image from: www.bikemTPaDg1.c7o04m044

                                                                                                                                                 Image from: Socaltrailriders.com.

Soil Stabilizers

• Soiltac® – www.Soilworks.com
• §   Most popular
• Cost prohibitive
• §   Used extensively on professional BMX tracks

• BioCement – www.biocementtech.com
• Environmentally inert
• Uses native soil bacterium to create stabilization (SCIENCE!)

• Dirt Glue Polymer – www.dirtglue.com
• Water Soluble
• Acrylic Polymer

Synthetics and Geogrids

Ditching and Culverts