Tunnel during construction, Waterworks Park, Detroit water supply system
Description:
View of tunnel during construction, Waterworks Park, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Land tunnel and structures. Contract RC 12. Dravo Contracting Co., contractors. Photo no. 86. Date: 3-20-31. Photo by Manning Brothers." Typed on back: "15 ft. 6 in. tunnel, south heading. Breaking out the outer edge of the concrete bulkhead in the shore shaft, which extend beyond the waterway."