The crane was on the hard shoulder between Junction 25 and Junction 26 eastbound, underneath Chain Bar Roundabout.
Fire crews were called at 4pm and when the first team arrived, they called for four more engines for water. Seven minutes later, two more fire engines were deployed as there was also a fuel fire in the run off from the fire.
Teams from Cleckheaton, Odsal, Bradford, Rastrick, Mirfield, Dewsbury and Huddersfield attended.
The flames were out by 5.11pm.