Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Eastern Express Highway is a 23.55 km (14.63 mi) city express highway serving the city of Mumbai. It is one of the busiest and most important roads in the Mumbai Metropolitan Area and is a part of the National Highway 3. It is generally 6 lanes wide (3 lanes in each direction) with over a dozen flyovers/grade separators. It is a north-south artery of Mumbai connecting the city proper to the eastern suburbs and to the metropolitan area of Thane.