Table used by SRD on the Statewide planning map. Table of pavement base thicknesses on the Texas roadway network.
<div>Table used by SRD on the Statewide planning map.</div><div><br /></div><div><div>The thickness of the base pavement. For rigid pavements the base is
 all layers between subgrade and bottom of concrete surface. For 
flexible pavements the base is all layers between subgrade and bottom of
 asphalt concrete layer. If there are several types of base, the total 
thickness of all base layers​ is reported.​ This data is updated by GRID
 users.  Base thicknesses are located geographically along roadways 
using linear referencing. </div><div><br /></div><div>Update Frequency: Bi-Annually</div><div>Source: Geospatial Roadway Inventory Database (GRID)</div><div><br /><br /></div></div>
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