A look-ahead schedule (sometimes called a two-week look-ahead or three-week look-ahead) is a short-term, detailed schedule covering the immediate upcoming period of a project. It complements the master Gantt schedule by adding day-by-day detail that the master schedule deliberately omits. Look-ahead schedules typically include daily crew assignments, sub coordination, material deliveries, inspection windows, and known constraints.
Look-aheads are typically reviewed at weekly project meetings with the GC, key subs, and sometimes the owner. They translate the master schedule into actionable daily work plans and surface conflicts before they become field problems. The discipline of producing a weekly look-ahead is one of the strongest predictors of on-time project delivery.