| [Image: Bridge installation] |
| [Image: Another type of temporary logging bridge] |
| [Image: Close temporary roads] |
Temporary roads often incorporate the same principles as permanent installations, but not the same degree of refinement and permanence. For example, the need exists to disperse water from temporary roads when conditions are wet, just as with permanent roads.
BMPs for Construction
- Roads should be built on the contour and at a sufficient distance to minimize disturbances to streams. Existing ridge lines should be used where possible.
- Crossings should be designed to prevent restrictions of high water flows during harvest operation.
- Temporary roads may include the use of mats, portable bridges, culverts, lateral ditches, etc.
- Temporary roads may require installation of underlayment to operate trucks across soft or unstable areas.
- Cross streams as close to right angles as is practical.
- Temporary roads should be closed and the soil stabilized after use. Stablize stream banks, ditches and roads as needed. Remove temporary crossings.
- Maintaining or closing temporary roads as the operation progresses prevents erosion and minimizes downtime.
Avoid
- Roads located directly up or down steep slopes.
- Turning water onto erodible soils unless additional protection from erosion is used.
- Creating channels by cutting deeper and deeper in an attempt to remove soft spots.