{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This dataset contains the Roads and Highways Road Network Linear Referencing System (LRS) HPMS thickness rigid event polyline feature class which identifies the total thickness of rigid pavement layers for Idaho\u2019s public roadway segments as reported through the Highway Performance Monitoring System (HPMS). The data supports structural design, pavement analysis, and performance evaluation of Portland Cement Concrete (PCC) facilities.", "description": "
The Idaho Transportation Department's (ITD) Roads and Highways Road Network Linear Referencing System (LRS) HPMS thickness rigid event polyline feature class represents the compacted depth, in inches, of the Portland Cement Concrete (PCC) surface layer in a rigid pavement structure. For rigid pavements, the thickness includes all PCC layers that provide structural strength to the roadway, whether reinforced or unreinforced. <\/SPAN><\/P> This dataset supports pavement performance modeling, design verification, and condition forecasting. It is reviewed and updated annually as part of ITD\u2019s Highway Performance Monitoring System (HPMS) submittal to the Federal Highway Administration (FHWA). <\/SPAN><\/P>