Dallas Fort Worth (DFW) International Airport in the US has begun an eight-year renovation of its four main terminals.

The renovation project, which includes improving the ticketing, security and concessions areas, will cost between $1.5bn and $2bn.

The airport will also have its terminal systems replaced, including electricals, plumbing, heating and cooling, conveyance and telecommunications.

The airport board has approved a $20.75m package for the URS Corporation of Dallas to begin the initial design work for the renovation of Terminals A, B, C and E.

Construction work is expected to begin by early 2011, with the first terminal scheduled to be complete in 2014. The entire project is scheduled to be complete by the end of 2017.

The construction phase requires a third of each terminal to be closed at a time.

The terminal development programme is a major component of the airport’s current master plan, which includes plans to develop regional rail services from Dallas Area Rapid Transit and The Fort Worth Transportation Authority.