MAIN STREET, JERUSLEM. As one of two major north-south thoroughfares in Aelia Capitolina (the renamed Roman city), the eastern cardo is a fine example of Roman street construction. Running down the center, with an open sidewalk on both sides, was the 26-foot-wide street, paved diagonally with smooth limestone slabs, each about 5 feet by 3 feet by 1 foot thick.