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September 1958 / Illinois Municipal Review / Page 201
September 1958 / Illinois Municipal Review / Page 203
Here's what the motorist on Illinois' new Northwest Tollway will see: Right-of-way 250 to 300 feet wide; four to six lanes of 10-inch reinforced concrete with outside shoulders of 11-foot wide asphalt to, allow emergency parking clear of traffic; inside shoulders four to five feet wide providing extra margin of safety for motorists who inadvertently leave the pavement in a passing movement; and a wide, depressed median strip between opposing lanes to prevent cross-over accidents and minimize effect of highlight glare. September 1958 / Illinois Municipal Review / Page 204
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