This report lists statistics on International Roughness
Index (IRI) Ratings which projects on the TIP are addressing. A summary
of this data displays in the upper section of the report. The summary
calculates the total percentage of miles (within the search area) that
have IRI addressed in the TIP or Draft TIP. The summary also displays
total conditions being addressed within the search area, as well as detailed
IRI data for each project within the search area.
Descriptions of column calculations are listed below:
· Miles: Calculated by summing the feet of all segments within the search area of each IRI Rating Categories and by multiplying the result by .000189393939.
· Percentage of Total Miles: Calculated by dividing the IRI Category Miles by the by the Total Miles in the search area.
· Total Miles Addressed: Calculated by summing the Improvement Miles on the detail sheet for each IRI Category.
· % Addressed by Projects: Calculated by dividing the Total Miles Addressed column by the Miles column for each IRI category.
· Miles Not Addressed: Calculated by subtracting the Total Miles Addressed from the Miles column for each IRI Category.
· % Not Addressed by Projects: Calculated by dividing the Miles Not Addressed by the Miles for each IRI Category.