As part of the Trinity River Project in Dallas, Texas, the Margaret Hunt Hill Bridge is a signature span designed by architect Santiago Calatrava in conjunction with Huitt-Zollars.

Constructed for the City of Dallas by the Texas Department of Transportation, the central design feature of the bridge is a 446-foot tall central parabolic arch with fan-like cables reeling off to the deck below. The bridge will measure 1,957 feet from abutment to abutment with 1,202 feet of cable-stayed roadway supported from the steel arch. There will be 58 stays ranging from 389 feet to 641 feet in length. The bridge deck will be 120 feet wide, carrying three lanes of vehicular traffic in each direction to connect downtown Dallas to west Dallas.

VSL will furnish and install its SSI 2000 Stay Cable System, perform required qualification testing as well as provide labor, supervision and equipment to erect the stays for the project. VSL was selected by Cimolai S.p.A. who is fabricating and erecting the steel for both the arch and the deck for Williams Brothers Construction, the General Contractor.

Because only lightweight equipment is required to install the cable stays, a more flexible overall construction schedule was possible. Without the use of any on-site cranes, the 58 cable stays will be installed beginning in April 2011. The SSI2000 stay cable system is designed to meet the requirements of International Federation for Structural Concrete (fib), Post Tensioning Institute (PTI) and Commission Interministerielle de la Precontrainte (CIP) – all of which specify a design life of up to 100 years with a defined adequate maintenance program. Such quality provisions allow for minimal maintenance costs and inspection disruptions.