Polyline layer of pavement base thicknesses on the Texas roadway network.
<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>Source: Geospatial Roadway Inventory Database (GRID)</div><div>Update Frequency: Bi-Annually</div>
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