It costs £7m a year to maintain the junction and because it's split over 5 levels making repairs pretty tricky.
Salt from winter gritting eats into the concrete and decaying sections are cut away using a super high-pressure water jet. They're then cleaned up with a pneumatic hammer and re-concreted back to their original condition.
Today marks the 40th anniversary of the Spaghetti Junction, designed to link major motorways, with the heart of Birmingham.
Art lovers are being told 'lie back and think of Brum' in an exhibition to celebrate the 40th anniversary of Spaghetti Junction.