Crowfield Road, Centre County - Center for Dirt and Gravel Road ...
Crowfield Road, Centre County - Center for Dirt and Gravel Road ...
Crowfield Road, Centre County - Center for Dirt and Gravel Road ...
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crowfieldroadWhat to look <strong>for</strong>While comparing the sections of <strong>Crowfield</strong><strong>Road</strong>, be sure to consider the followingfactors:APPEARANCE: The shape, uni<strong>for</strong>mity, <strong>and</strong>overall appearance of each road segment arevery important. <strong>Road</strong>s that hold their crownwill retain less water <strong>and</strong> are less likely tobreak apart. Look to see if loose stones arepiled in the middle of the wheel tracks <strong>and</strong> tothe sides of the road.COMPACTION: Compaction of aggregatematerial is critical <strong>for</strong> a road to hold itselftogether. Some sections have large loosestone on the surface. These loose stones willgrind into the surface under the abrasive<strong>for</strong>ce of traffic to produce more loose stones<strong>and</strong> dust. A hard compacted surface withminimal loose stone on top will last longer.RUNOFF: Be sure to look at the ditches <strong>and</strong>outlets along the road. Is there evidence ofroad material being washed from the surface?In some cases, outlet ditches contain asignificant amount of material that has beenwashed off of the road surface. This materialbecomes sediment that can pollute nearbystreams.DEPTH: Although depth of aggregate materialis hard to visibly identify, it is a crucial part ofthis study. The tailgated road segments(1,2,3) vary from 2-6 inches in depth. Theroad segments placed with the paver (4,5,6)are approximately 6 inches deep on average.Despite a higher initial cost, the deeperplacement of material with the paver may bemore cost effective over time.crowfield road:site location & directions<strong>Crowfield</strong> <strong>Road</strong> is located just off US Rte 32211 miles south of State College in Southern<strong>Centre</strong> <strong>County</strong>. Turn West off US 322 just asit turns from two lanes to four lanes going upSeven Mountains. The project site beginsabout ½ mile from US 322.StateCollege<strong>Crowfield</strong><strong>Road</strong><strong>Centre</strong><strong>County</strong>Funding <strong>for</strong> the project provided by the<strong>Center</strong> <strong>for</strong> <strong>Dirt</strong> <strong>and</strong> <strong>Gravel</strong> <strong>Road</strong> Studies<strong>and</strong> the Bureau of ForestryPlease contact the center with any questions:toll free: 1-866-668-6683e-mail: dirt<strong>and</strong>gravel@psu.eduFor more in<strong>for</strong>mation visit:www.dirt<strong>and</strong>gravelroads.orgaggregatestudycrowfieldroadKeyTailgatedSections1: Clay AddedVariation to DSA2: 2A3: DSAPavedSections4: Clay AddedVariation to DSA5: 2A6: DSALook <strong>for</strong>correspondingnumbered signson siteThe <strong>Crowfield</strong><strong>Road</strong>Aggregate Studyis a collaborationof Penn StateUniversity’s<strong>Center</strong> <strong>for</strong> <strong>Dirt</strong><strong>and</strong> <strong>Gravel</strong> <strong>Road</strong>Studies <strong>and</strong> PABureau ofForestry’sRothrock StateForest.
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