3D Technique Offers a Whole New Picture of Underground Chicago

Digging in the public right-of-way in Chicago — or in any city — can be a risky proposition. According to the American Public Works Association, an underground utility line is hit every 60 seconds in the U.S., in part because many renditions of underground assets don’t record depth. When planning a dig, utility companies and city departments have had to accept a degree of the unknown...

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