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<br />. <br /> <br />. <br /> <br />~ <br />~ <br />~J <br />~ <br />( <br />c <br /> <br />Construction of the Waddell pumping-generating plant continues, <br />with the structural work about 80 percent done. Installation of pumps <br />and motors in the plant will begin soon. <br />Construction of the dam embankment also will begin soon, following <br />the award of a $135 million contract in December. <br /> <br />Stewart Mountain Dam <br /> <br />Construction of the new spillway at the dam is complete, and the <br />radial gates that will control flow from the spillway have been tested. <br />The river outlet works penstock and power penstock also have been <br />rehabilitated, with the addition of a new liner and new valves. <br />Placement of concrete overlays on selected portions of the dam to help <br />stabilize it in the event of an earthquake is nearly complete, and three <br />feet of concrete has been added to the top of the dam to accomodate the <br />installation of steel cables through its arch beginning t~is summer. <br />The top of the dam also has been widened to provide easier access for <br />maintenance vehicles. <br />Current work involves construction of a concrete wall for the new <br />spillway's inlet channel and construction of parapet walls on top of the <br />dam. Also, the concrete piers on the existing spillway are being <br />lengthened so stoplogs can be placed in front of the spillway gates <br />during routine maintenance work. Most of this work will be complete by <br />May, and all work will be done by early July. <br />Saguaro Lake, lowered 45 feet in October so this work could be <br />accomplished, will be returned to its normal level by March 15. <br />From June 1990 to June 1991, post-tensioned steel cables will be <br />installed through the dam and into its foundation at selected locations <br />to further stabilize it. <br /> <br />Roosevelt Dam <br /> <br />Realignment and widening of the Apache Trail (S.R. 88) near the <br />dam is about 75 percent complete, and the work is scheduled to be done <br />by June. The road through the construction area remains closed to <br />traffic from 6:00 a.m. to 2:30 p.m. daily except weekends and holidays, <br />and this will continue until mid-March. periodic road closures also will <br />occur throughout the modification period. <br />Construction of a new, 16-foot diameter, 925-foot long tunnel <br />through the canyon wall around the south side of the dam is underway. <br />About 80 feet of the tunnel, which will carry water from Roosevelt Lake <br />into the Salt River and to the dam's hydroelectric powerplant after <br />modification is finished, has been excavated. <br />Relocation of a portion of SR 88 near the dam is about 43 percent <br />complete, and construction of a new bridge across Roosevelt Lake just <br />upstream of the dam by the Arizona Department of Transportation <br />continues. The bridge is scheduled to be complete in September, and the <br />road relocation by the end of 1990. <br /> <br />-more- <br />