The Dodge Momentum Index moved 4% higher in March to 166.9 (2000=100), up from the revised February reading of 160.3. The Momentum Index, issued by DodgeConstruction Network, is a monthly measure of the initial report for nonresidential building projects in planning, which have been shown to lead construction spending for nonresidential buildings by a full year. In March, the commercial component of the Momentum Index rose 7%, while the institutional component fell by less than one percent.