With the current specifications, a new road will cost $1.5 M initially, need $120K in annual maintenance and need to be resurfaced every 10 years, cost = $1.1M. A proposed new spec will cost $2.1M, cost $90K annually in maintenance and require resurfacing every 15 years, cost = $1.3M. Alternative "current" is preferred when ? % ≤ MARR ≤ ? %. Use capitalized cost.