** Shares of the infrastructure service provider VNT.AX
rise as much as 6.1% to an all-time high of A$2.71
** Ventia gets asset management services contract for the
Western Harbour Tunnel and Sydney Harbour Tunnel project by the
New South Wales state transport agency urn:newsml:reuters.com:*:nNZS1d1va
** Co says base contract is an initial 15-year term with two
10-year extension options and expected to generate about A$450
mln in revenue
** Stock posts biggest intraday pct gain since March 16
** About 868,531 shares change hands vs their 30-day average
volume of 682,595 shares
** Stock up 30.5% this year, as of last close
(Reporting by Anan Ashraf)
((Anan.Ashraf@thomsonreuters.com))