Isolux Corsan and Plenary Group are squaring off for a $312 million deal to ‘develop’ a public-private partnership (PPP or P3) involving US Route 36 in Colorado, according to the High-Performance Transportation Enterprise (HPTE).     Â
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The HTPE, a Colorado Department of Transportation (CDOT) office dedicated to surface transportation, said ‘Plenary Roads Denver’ and ‘US 36 Development Partners,’ a consortium including Isolux, responded to a request for proposal (RFP) published last August.
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The HTPE in May 2012 shortlisted Plenary, US 36 Development Partners and ‘Denver Access Partners,’ a consortium teaming Cintra Infraestructuras, Ferrovial Agroman, Lawrence Construction Company and AZTEC Engineering Group.
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Denver Access Partners did not respond to the RFP.  A fourth team, ‘Accelerate 36 Consortium,’ including Balfour Beatty Capital, Edgemor Infrastructure and Real Estate, Brisa, Atkinson Construction, Parsons Brinckerhoff, and Scotiabank, were not issued the RFP.
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The Plenary Group consortium comprises Ames Construction, Granite Construction, HDR, Transfield Services, and Goldman Sachs Group.
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In addition to Isolux toll road unit Isolux Infrastructure, Kiewit Infrastructure Company, Atkins, Terracare Associates, and Bank of Tokyo-Mitsubishi UFJ make up US 36 Development Partners.
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The winning bidder will design, build, finance, operate and maintain a 50-year toll road concession of a 24-mile span of US Route 36 in Colorado.
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The HTPE is expecting to announce its ‘preferred proposer’ in April.  Â