1 PAVEMENT DATA ITEMS

2 Climate_Shapes (4 LTPP zones) Soil_Shapes Metadata Estimates Section level data HPMS Pavement Data Summary level data

3 Pavement Summary Data Included in Statewide Summaries Table: STATEWIDE SUMMARIES TABLE Field NameData TypeDescriptionValid Values Paved RMC LengthDecimal(8,3)Paved Rural Minor CollectorsReport total miles of paved roads to the nearest mile. Paved RL LengthDecimal(8,3)Paved Rural LocalsReport total miles of paved roads to the nearest mile. Paved UL LengthDecimal(8,3)Paved Urban LocalsReport total miles of paved roads to the nearest mile. Unpaved RMC LengthDecimal(8,3)Unpaved Rural Minor CollectorsReport total miles of unpaved roads to the nearest mile. Unpaved RL LengthDecimal(8,3)Unpaved Rural LocalsReport total miles of unpaved roads to the nearest mile. Unpaved UL LengthDecimal(8,3)Unpaved Urban LocalsReport total miles of unpaved roads to the nearest mile.

Item 47: IRI (International Roughness Index) 4  Definition: A statistic used to estimate the amount of roughness in a measured longitudinal profile  Extent Requirement: All paved NHS and principal arterials, rural minor arterial Sample Panel sections

Item 47: IRI (cont’d) 5  Guidance:  Code a default date when IRI date is unavailable  Measure annually for NHS sections  Every 2 years for other sections  Include structures and railroad crossings in measurement

Item 47: IRI (cont’d) 6  Guidance (cont’d):  Measure /report consistently for same direction and lane  Report the average of right and left quarter-car IRI Mean Roughness Index (MRI)  Report either IRI or PSR for samples on rural major collectors, urban minor arterials and collectors

Item 48: PSR (Present Serviceability Rating) 7  Definition: Present Serviceability Rating (PSR) for pavement condition  Extent Requirement: All paved urban minor arterial, urban collector, and rural major collector Sample Panel sections

Item 48: PSR (cont’d) 8  Guidance:  Not required if IRI is reported  Code PSR based on IRI data collection practices  If rating is unavailable, refer to Table 4.4

Item 49: Surface Type 9  Definition: Surface type on a given section  Extent Requirement: All Sample Panel sections

Item 49: Surface Type (cont’d) 10 Table 4.5

Item 50: Rutting 11  Definition: Average depth of rutting  Extent Requirement: All paved Sample Panel sections

Item 50: Rutting (cont’d) 12  Guidance:  Collect on a two-year cycle  Report for all AC and composite surface types (where AC is the top layer)  Report average rutting value of both wheel paths  Report for IRI inventory direction and lane

Item 50: Rutting (cont’d) 13 Rutting Example

Item 51: Faulting 14  Definition: The average vertical displacement (difference in elevation) between adjacent jointed concrete panels in the direction of travel  Extent Requirement: All paved Sample Panel sections

Item 51: Faulting (cont’d) 15  Guidance:  Collect on a two-year cycle  Measure every joint and report as average  Report for all JPCP surface types

Item 51: Faulting (cont’d) 16 Faulting Example

Item 51: Faulting (cont’d) 17 Faulting Example (Plan View)

Item 52: Cracking Percent 18  Definition: Estimate of percent area with fatigue type cracking for AC pavements (typically in wheel path) and percent of slabs with cracking for PCC pavements  Extent Requirement: All AC, PCC, and composite paved Sample Panel sections

Item 52: Cracking Percent (cont’d) 19  Guidance:  Report for IRI inventory direction and lane  Collect on a two-year cycle  Report as percent of actual pavement with fatigue cracking  Determine best estimate of area with fatigue cracking

Item 52: Cracking Percent (cont’d) 20 AC High Severity Longitudinal Cracking

Item 52: Cracking Percent (cont’d) 21 AC Moderate Severity Fatigue Cracking

Item 52: Cracking Percent (cont’d) 22 JCP High Severity Longitudinal Cracking

Item 53: Cracking Length 23  Definition: Estimate of relative length in feet per mile (ft/mi) of transverse cracking for AC pavements and reflection cracking for composite pavements where AC is the top surface layer  Extent Requirement: All AC (transverse cracking), and composite (reflection cracking) paved Sample Panel sections

Item 53: Cracking Length (cont’d) 24  Guidance:  Collect on a two-year cycle  Report for AC and reflection cracking for composite pavements  Report for IRI inventory direction and lane  Cracks must be at least 6 ft. in length  Report the summation of lengths of all transverse cracks

Item 53: Cracking Length (cont’d) 25 High Severity AC/Composite Reflection Cracking

Item 53: Cracking Length (cont’d) 26 High Severity AC Transverse Cracking

Item 54: Year of Last Improvement 27  Definition: The year in which the roadway surface was last improved  Extent Requirement: All paved Sample Panel sections

Item 54: Year of Last Improvement (cont’d) 28  Guidance:  Report for IRI inventory direction and lane  Report for >= 0.5 inches of compacted pavement material  Report for either the date construction ended, or opened to traffic  Retain coded improvement year, until next surface improvement

Item 55: Year of Last Construction 29  Definition: The year in which the roadway was constructed or reconstructed  Extent Requirement: All paved Sample Panel sections

Item 55: Year of Last Construction (cont’d) 30  Guidance:  Report for IRI inventory direction and lane

Item 56: Last Overlay Thickness 31  Definition: Thickness of the most recent pavement overlay  Extent Requirement: All paved Sample Panel sections

Item 56: Last Overlay Thickness (cont’d) 32  Guidance:  Report for IRI inventory direction and lane  Report all overlays >= 0.5 in. in thickness

Item 57: Thickness Rigid 33  Definition: Thickness of the rigid pavement  Extent Requirement: All paved Sample Panel sections

Item 57: Thickness Rigid (cont’d) 34  Guidance:  Report for IRI inventory direction and lane  Must reflect the last improvement on the section  Surface Type codes ‘3’, ‘4’, ‘5’, ‘7’, ‘8’, ‘9’, and ‘10’ indicate rigid pavements  For composite pavements, code this item and Data Item #58

Item 58: Thickness Flexible 35  Definition: Thickness of the flexible pavement  Extent Requirement: All paved Sample Panel sections

Item 58: Thickness Flexible (cont’d) 36  Guidance:  Report for IRI inventory direction and lane  Report the total thickness of AC pavement  Report AC portion thickness of composite pavements  Surface Type codes ‘2’,‘6’, ‘7’ and ‘8’ indicate flexible pavements  For composite pavements, code this item and Data Item #57

Item 59: Base Type 37  Definition: The base pavement type  Extent Requirement: All paved Sample Panel sections

Item 59: Base Type (cont’d) 38  Guidance:  For multiple base types, code for the layer immediately below surface  Report for IRI inventory direction and lane

Item 60: Base Thickness 39  Definition: The thickness of the base pavement  Extent Requirement: All paved Sample Panel sections

Item 60: Base Thickness (cont’d) 40  Guidance:  For multiple base types, report the total thickness of all base layers  Report for IRI inventory direction and lane

Item 61: Climate Zone 41  Definition: Climate zone as defined by the 4 LTPP climate zone descriptions  Extent Requirement: All Sample Panel sections  FHWA coded

Item 61: Climate Zone (cont’d) 42 LTPP Climate Zone Map

Item 62: Soil Type 43  Definition: Soil type as defined by AASHTO soil classes  Extent Requirement: All paved Sample Panel sections  FHWA coded

44 Pavement Estimates Data  Binder_Type  Dowel_Bar  Joint_Spacing

45 Pavement Metadata  Used to describe, interpret submitted data  State/off-State system bifurcation  Rural/urban bifurcation  Functional system breakout CodeDescriptionCodeDescription 1 IRI_EQUIP_TYPE8FAULTING_METHOD 2 IRI_INTERVAL9FAULTING_EQUIP_TYPE 3 RUTTING_METHOD10CRACKING_FAT_EQUIP 4 RUTTING_EQUIP_TYPE11CRACKING_FAT_CRACK_TYPE 5 RUTTING_NUM_SENSORS12CRACKING_TRAN_EQUIP 6 RUTTING_INTERVAL13CRACKING_TRAN_CRACK_TYPE 7 FAULTING_INTERVAL14CRACKING_METHOD

HPMS Pavement Issues  Data item section lengths impact performance measures… 46 %IRI<95:50.0 IRI (in/mi) %IRI<95:30.0 IRI (in/mi)

47 HPMS Pavement Issues Average HPMS IRI Reporting Lengths