Pavement Preservation Journal - Spring 2013 - (Page 19)

By Syed Waqar Haider, Ph.D., P.E. A new web-based quick check highway health calculator tool—with minimal calculations— now is letting road agency personnel easily determine the adequacy of their resource allocation efforts for pavement preservation. An agency needs to know whether its current or planned program activities—reconstruction, rehabilitation and preservation— will produce a net improvement in the condition of its road network. However, before the effects of any planned actions on the highway network can be analyzed and evaluated, some basic network life concepts need to be understood. Assume that for every lane-mile of road in a network, the number of years of remaining life (until the terminal condition) is known. If no improvements are made for one year, the number of years of remaining life will decrease by one year for each road segment, except for segments already at zero. As a result the number of roads with zero life will increase because not only is the previous balance retained, but also roads that previously had only one year of remaining service life are added. Some highway agencies continue to assign their highest priorities to reconstructing or rehabilitating their worst roads. The practice of “worst first” (i.e., continually addressing only those roads in the zero category) is a proven death spiral strategy, as reconstruction and rehabilitation are the most expensive ways to maintain or restore serviceability to the infrastructure. Furthermore, rarely Screen capture of portion of new web-based Quick Check of Highway Health calculator welcome page Spring 2013 pavement preservation journal 19 CENTERS New Online Tool Helps Measure Road Network Health

Table of Contents for the Digital Edition of Pavement Preservation Journal - Spring 2013

President’s Message
MAP-21: Pathway to Preservation at the Federal Funding Level
Cold-in-Place Recycling, Fiber Membrane and Seal Preserves Desert Highway
NCPP: New Online Tool Helps Measure Road Network Health
NCAT UPDATE: Axle Loads, Mileage Begin to Accumulate on NCAT Tests
NEPPP: Ribbon Cuttings Shine Spotlight on New Hampshire Pavement Preservation
TPPC: Micro Surfacing Training Offered at Texas Center
MnROAD Studies Pavement Preservation
Enlist News Media in Battle for Pavement Preservation
HIR Solves Cost Challenge to Runway Reconstruction
Shale Gas Boom Drives Town’s Bridge Renovation
Optimum Time for Slurry Seal Depends on Original Build Dat
Index of Advertisers

Pavement Preservation Journal - Spring 2013