What is the Cost of an Overhead Crane System? 2017/8/16 · 5-ton capacity Span of 40 feet or less Base design trolley, hoist, and bridge Portable Gantry Crane: $6,000 Capacities from 1-ton to 5-ton Spans from 8 feet to 30 feet Heights under boom from 10 feet to 20 feet Engineered Gantry Crane: $70,000 – $80,000 5-ton. Get Price.