2006 headquarters dietlikon switzerland key people anton affentranger chairman christian bubb ceo revenue chf2 522.6 million 2011 1 operating income chf93 .7 million 2011 1 net income chf61 .4 million 2011 1 number of employees 5648 2011 website www.implenia.com implenia six impn is the largest construction company in switzerland . notably it recently successfully fought off a takeover by the uk hedge fund laxey partners . 2 contents 1 history 2 structure 3 major projects 4 sources 5 external links 6 references history edit the company was created in march 2006 through a merger between zschokke founded 1872 and batigroup founded 1997 . it acquired bilfinger construction in december 2014 . 3 structure edit the company has three divisions real estate construction global solutions major projects edit major projects involving the company include the roxburgh dam completed in 1953 4 the dinorwig power station completed in 1984 5 the sunniberg bridge completed in 1998 6 the stade de gen ve completed in 2003 7 and the swissmill tower that was rebuilt by april 2016 . 8 the company is working on the gotthard base tunnel project which is expected to be completed in 2015 . 9 along with bilfinger se frutiger ag and impresa pizzarotti implenia forms part of the transco consortium responsible for the sedrun work site of the tunnel . 10 sources edit gray tony 1987 . the road to success alfred mcalpine 1935 1985 . rainbird publishing . external links edit wikimedia commons has media related to implenia . official site references edit a b c implenia annual report 2011 swiss info bilfinger seals 282 million sale to implenia to exit building . bloomber . 14 december 2014 . retrieved 13 july 2015 . sign advertising cubitts and zschokke and the roxburgh hyro electric power project roxburgh hydro . retrieved 4 june 2012 . gray p. 14 sunniberg bridge on the structurae database stade de gen ve on the structurae database dubai und schanghai k nnen einpacken in z rich steht der h chste kornspeicher der welt . watson . retrieved 19 may 2016 . transco booth martina 29 april 2010 . gotthard a titanic tunnel . new civil engineer . emap publishing limited . retrieved 15 july 2015 . companies portal retrieved from https en.wikipedia.org w index.php title implenia & oldid 727410721 categories construction and civil engineering companies of switzerland2006 establishments in switzerlandcompanies established in 2006hidden categories commons category with page title same as on wikidata navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version in other projects wikimedia commons languages deutschfran ais edit links this page was last modified on 28 june 2016 at 20 23 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view