Johannesburg, Marshall St. (1) SITE NUMBER : BB43-39 DESCRIPTION : This site is extremely visible from the M1 double decker bridge leading into Johannesburg CBD. The M1 highway experiences a constant flow of traffic and significant traffic congestion during a typical rush hour. Both faces are visible. SIZE: 15m x 41m TRAFFIC : 120,200 Vehicles per day GPS CO-ORDINATES : -26.208700, 28.031142