RM 11-05-71 - Laserfiche WebLink

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6. NEW BUSINESS (Cont_'d 1. Tunnel Under St. Zoseph Street for Cultural Cent r: _Toommissioq authority was requested to have-our- engineering consultants, Clyde.E. Williams_ &. Assocites, desi n the tunnel under St. Joseph Street for access to the ultural Center, R -66. Commission President requested.Mr..Ll.oyd S Taylor, City Engineer, to discuss his recommendation for the tunnel._ Mr aylor advised he met with the.staff of the Depart- ment of Redevelopment yesterday on this and'h:is feeling is that the tunnel.connecti.ng the 'Cultural Center property east of St. Joseph Street and the proposed future parking structure on the wdst side of St. Joseph Street have a minimum clearance of eight (8) feet and provide for -one- way vehicular traffic only, plus ample allowance for pedestrian traffic. Initially discussed was a full-blown-tunnel 14'-l/ 2 ft.. of clea height and concrete construction', and.,th'6 bottom of the unnel would have been 14 ft. to 16 ft. below grade. - 14 ft. of clearance inside of the parking structure would be n eded. A parking structure - cannot. be practically desi ned for equipment needing 14,ft. clearance'to utilize the unnel. Consequently, it would be uneconomical to, furn sh greater clearance i.n the - tunnel. .Fi,re and emergency acce s must be through the Cultural Center. On temporary basi , he suggested a 4:1. slope on St. Joseph Street, on. the xisting grade.to go out approximately -60 feet beyond the est line of St. Joseph Street. Th'e- tunnel should slope up from the east side to the west at a maximum gradient of 3 %. This will nearly match_ the existing trade elevation on. the west side. Mr. Taylor said his. back -fill thoughts. are. the :same -as the Comm ssion has been discussing,, .,remove the rubble from under St. Joseph Street. On St. Joseph.Street; you must. use. good _ material to support it. Mr. Taylor also recommended.that. the north -south service road from Washington. to,_Colfax 'n'ot-be .included in Phase II -B; construction, and the present. parking, area at ` -the Lower- ele- vation be maintained by- using the existing service drive from Washington Street and the pedestrian service through the xisting Columbus Court from Michigan.Street. That we not install a service drive until we need it.for the.block. On m )tion by Mr. Wiggins, seconded .by Mr. Wade., Clyde E. Williams & Associates, our engineering consultants, is auth rized to design the tunnel under St. Joseph Street for access to the Cultural Center, R -66. Motion unanimously carried. -11- _CLYDE- E..WILLIAMS AUTHORIZED TO DESIGN TUNNEL,', R-66