<strong>Rio De Janeiro: </strong>Construction work at Rio de Janeiro's Barra Olympic Park, the main venue cluster for this year's Olympic Games, has hit 97 percent completion, organisers said. The complex, which will will host 16 of the 42 Olympic sports and nine of the 23 Paralympic disciplines, was 95 percent finished in December, Xinhua news agency reported. Meanwhile the velodrome, which will host the track cycling test event from April 29 to May 1, is 80 percent ready, up from 76 percent in December. <p></p> <p></p>At Deodoro Park, the second largest venue cluster, Youth Arena has made the fastest progress, reaching 80 percent completion compared with 75 percent in December. The venue will host basketball, fencing and wheelchair fencing. Carioca Arena 1 and the Olympic hockey centre are 100 percent complete and have already staged successful test events.