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1. Main Roads 



Main logging roads are those cciisl isrtfrj to serve transportation needs 

 from a major drainage. The Gold Crcelv i.nci Thompson River roads are examples 

 of main logging roads. Engineering and construction standards will provide 

 good alignment to insure a rapid and safe transportation. Bridges, 

 culverts, and ditches will be permanerit type construction in order to 

 withstarrfl heavy unc by traffic and to handle tli? nnst ^^pvere effects of 

 v;eather. Main logging roads will be cicjhcr double lane or single lane with 

 intcrvisable turnouts and double-lane curves (over 5°) in order to allow 

 a smooth flow of traffic. Turnouts will be constructed to provide easy 

 access and to be a minimum length of 50 feet. Sufficient gravel surfacing 

 will be provided to give a smooth roadvoy easy to maintain. Double-lane 

 roads will be at least twenty-four (24) feet in surface width; single -lane 

 roads will be fourteen (14) feet in surface width- Ilaxinum grades will be 

 8% favorable and 6% adverse, except in special cases. 



2. Secondary Roads 



Secondary logging roads are built to serve transportation in a tributary 

 of n major drainage. Fishtrap Creek and Mollett Park roads are examples of 

 secondary raods. Engineering and construction standards will not be as 

 detailed as in the case of main logging roads; hov/ever, good alignnent is 

 still necessary. Bridges and drainages (ditches and culverts) will be of 

 a permanent type. Secondary roads will be single lane with double-lane 

 curves (over 5o). Turnouts will be at intervals that will allow traffic 

 to move with little delay (minimum length 50'). Spot surfacing will be 

 provided to weatherproof the road, but will not necessarily be done to make 

 a smooth roadbed. Single lane should be at least foui can (14) feet 

 surface width and curves at least tv/enty-four (2^) feet. Maximun grade 

 should not exceed 8% favorable or 6% adverse, except in special cases. 



3. Branch Roads 



Dranch roads are permanent roads u?;..! to allow removal of timber from 

 small acreages. Engineering and construction will be sufficient to allow 

 safe and economical transportation without regard for surfacing. Branch 

 roads will be single lane (minimum width of 12') with enough turnouts to 

 allow traffic to pass but at a slow speed. There will be no surfacing 

 except to make roads passable. Permanent drainage structures will be 

 required. Ditches will be required to adequately drain the road. 

 Maximum grades will be Q% favorable and 6% adverse, except in special 

 cases. Branch roads will be outsloped and diagonal drainage barriers 

 constructed when timber removal is completed to minimize damage from 

 erosion. The roadway will be turnpiked on flat ground to provide 

 drainage. Good alignment is often possible and desirabTc on branch roads 

 for both safety and hauling speed. 



A. Spur Roads 



Spur rocids will be temporary roads constructed to log a small area. 

 Roads will be spaced at Ipast GOO feet for cable loggin.; and V; mile for tractor 

 logging. Engineering and construction will be sufficient to allow safe 

 transportation. Bridges and culverts will be of tcr.ipoy^ary construction 

 and will be removed when logging is completed. Turnouts and "jay holes" 



