From Twelfth Street to Chicago Avenue the only east-and-west streets crossing Michigan Avenue that carry a heavy commercial traffic are the four east-and-west streets immediately south of the river, and the four east-and-west streets immediately north of the river. These eight east-and-west streets, together with the tracks and sidings of the Chicago and Northwestern railway on the north bank of the river, are the only points where commercial traffic comes into collision with the north-and-south movement on the Lake front parkway. Naturally the commercial cross-traffic that flows east and west through these eight streets is particularly dense, being created by the railway terminals, docks, and warehouses east of Michigan Avenue, both north and south of the river. By actual count on a given day it was found that between the hours of 8 and 10 o’clock in the morning the pedestrian movement at the crowded crossing at the intersection of Michigan Avenue with Randolph Street was 12,484. In short, 104 people, sixty per cent of whom were probably women and children, passed this corner every minute. On the same morning it was ascertained that between 7 and 10 o’clock 893 trucks and light vehicles moved in the intersection of one of these streets and Michigan Avenue. Confusion and delay attendant upon the concentration of such masses are certain to increase as the Illinois Central, the Michigan Central, and the Wisconsin Central railways improve their terminals, as the warehouses of this district are increased, and as more docks or harbors are developed at the mouth of the river. By the plan for the connecting boulevard, which would begin its rise at Randolph Street, heavy traffic would be diverted into Lake Street and other streets north, making the Randolph Street intersection safer for pedestrian movement. The other streets crossing under the parkway would be freed almost entirely of cross-traffic, and the loss of time resulting from impeded movement would be reduced to the minimum. Evidently if this Lake front parkway is to be dedicated solely to the use of the people, with commercial traffic excluded, it cannot be carried across these east-and-west streets at the present level of Michigan Avenue, without depressing these east-and-west streets. After an investigation by engineers all thought of such street depression has been abandoned. Therefore the boulevard connection must be elevated from Randolph Street on the south to Indiana Street on the north, if collision between two classes of traffic, both of which are better served when kept apart, is to be avoided.