Allegheny County Airport Authority (ACAA) in the US has appointed RW Block Consulting to work on the proposed $1.1bn terminal project at Pittsburgh International.

Under the five-year contract, RW Block will receive $1.09m for its first year of work. The contract with the authority will expire in July 2023, when Pittsburgh’s new terminal is due to open.

At present, the two terminals at Pittsburgh airport are located in different buildings and passengers have to travel from one building to the other.

In September last year, Allegheny County Airport Authority unveiled its plan to upgrade the 25-year-old airport.

“The redevelopment plan includes abandoning the current landside terminal and inter-terminal tram and replacing them with a new landside building.”

The redevelopment plan includes abandoning the current landside terminal and inter-terminal tram and replacing them with a new landside building between terminals C and D, in addition to reducing the number of gates from the existing 75 to 51.

The modernisation plan also includes a six-storey parking garage with spaces for 3,000 cars including a rental car facility and transport.

Construction work is scheduled to commence next year.

Allegheny County Airport Authority is the governing agency for the Pittsburgh International and Allegheny County airports.

Pittsburgh International Airport serves more than eight million travellers per annum through 17 carriers.