The sculpture, which is estimated to be seen by 35,000 motorists as they drive between Newark and Lincoln, was put up with two cranes before it was secured with nuts and bolts by 40 volunteers.
Plans for the sculpture were unveiled to mark the centenary of the RAF in 2018. Each wing measures about 14.5m (47.6ft).
It is tilted to give the impression that the Lancaster is in flight, heading home to RAF Swinderby – a former station about 2 miles (3km) away.
Mr White said: “Hopefully it’s nice weather and everyone will have a nice time.
“Please come and see what we’re doing and make a donation so we can hopefully get the project finished as soon as possible.”
Free parking will be located near the entrance via Folly Lane. The walk from the car park to the sculpture site is a flat track and no dogs are allowed.