Gravelly Hill Interchange, better known as Spaghetti Junction, is junction 6 of the M6 motorway where it meets the A38(M) Aston Expressway in Birmingham, United Kingdom.
Its colloquial name was coined in the 1970s by a sub-editor of the Birmingham Evening Mail, Alan Eaglesfield, after he realised that an aerial picture of the complex system of intertwined loops and ramps reminded him of a plate of spaghetti. It provides access to and from the A38 (Tyburn Road), A38 (M) (Aston Expressway), the A5127 (Lichfield Road/Gravelly Hill), and several unclassified local roads.
The junction covers 30 acres (12 hectares), serves 18 routes and includes 4 km (2.5 miles) of slip roads, but only 1 km (0.6 miles) of the M6 itself. Across 5 different levels, it has 559 concrete columns, reaching up to 24.4 metres (80 ft) height. The engineers had to elevate thirteen and a half miles of motorway to accommodate two railway lines, three canals, and two rivers.
Read the rest of this entry »