{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This dataset contains the Roads and Highways Road Network Linear Referencing System (LRS) HPMS last overlay event polyline feature class that provides the most recent pavement overlay applied to Idaho\u2019s public roadway segments as reported through the Highway Performance Monitoring System (HPMS). The data supports pavement design, rehabilitation analysis, and lifecycle cost modeling across Idaho\u2019s state and local highway network.", "description": "

The Idaho Transportation Department's (ITD) Roads and Highways Road Network Linear Referencing System (LRS) HPMS last overlay event polyline feature class identifies the compacted depth of the most recent pavement layer placed over an existing roadway surface during an overlay or resurfacing project. This value reflects the thickness of new asphalt or Portland Cement Concrete (PCC) material added to restore structural integrity, ride quality, and service life. <\/SPAN><\/P>

Thickness data is derived from project construction documentation, pavement design plans, and ITD\u2019s pavement management systems. For asphalt overlays, thickness represents the compacted depth of new hot mix asphalt placed on the existing pavement. For concrete overlays, it represents the finished depth of the new concrete layer above the previous surface. <\/SPAN><\/P>

This dataset is used by engineers, pavement managers, and analysts to evaluate the structural adequacy of resurfaced pavements, estimate remaining service life, and support performance modeling. It also assists in determining maintenance timing, comparing design versus constructed conditions, and verifying consistency with HPMS data submissions to the Federal Highway Administration (FHWA). Updates occur annually as part of ITD\u2019s Highway Performance Monitoring System (HPMS) submittal cycle using the most current pavement project and inventory information. <\/SPAN><\/P>

These are current \"working\" records. For the static, published data, please see the records stored at: <\/SPAN>https://www.fhwa.dot.gov/policyinformation/hpms.cfm<\/SPAN><\/A><\/P><\/DIV><\/DIV><\/DIV>", "summary": "This dataset contains the Roads and Highways Road Network Linear Referencing System (LRS) HPMS last overlay event polyline feature class that provides the most recent pavement overlay applied to Idaho\u2019s public roadway segments as reported through the Highway Performance Monitoring System (HPMS). The data supports pavement design, rehabilitation analysis, and lifecycle cost modeling across Idaho\u2019s state and local highway network.", "title": "Roads and Highways - HPMS Last Overlay", "tags": [ "Transportation", "Roads and Highways", "Linear Referencing System", "LRS", "Road Network", "Highway Performance Monitoring System", "HPMS" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 20000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "This dataset was developed and provided by the Idaho Transportation Department (ITD). Users should credit ITD as the original source when utilizing or referencing this information in maps, reports, or applications.", "licenseInfo": "

Spatial Data Disclaimer - The Idaho Transportation Department (ITD) provides this geographic data any any associated metadata \"as is\" without warranty of any kind, including but not limited to its completeness, fitness for a particular use, or accuracy of its content, positional or otherwise. It is the sole responsibility of the user to determine the usability of the data for their purposes. In no event shall ITD have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind arising out of the use of or reliance on the geographic data or metadata. In providing this data or access to it, ITD assumes no obligation to assist the user in the use of such data or in the development, use, or maintenance or any applications applied to or associated with the data or metadata.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "portalUrl": "" }