The company in charge of Birmingham’s highways has acquired a major transport consultancy – its third acquisition in the past year.

Amey, which last year won the £2 billion PFI contract to maintain Birmingham’s roads over the next 20 years, has taken over Transportation Planning (International) Ltd (TPi).

All of TPi’s professionals will join Amey’s consultancy business, taking staff in the division to 2,300 – a 10-fold increase in six years.

Mel Ewell, chief executive of Amey, said: “With transport budgets under increasing pressure, it has never been more important for Amey to deliver value throughout the life cycle of our projects.

“Transport schemes are central to improving the prosperity of local economies. By acquiring this highly respected consultancy, Amey is investing in some of the best professionals from within industry who will deliver the best long-term solutions for our customers.”

Alan Bailes, managing director of Transportation Planning (International) Ltd, said: “Amey has identified a clear business case for combining its own experience in delivering complex transport schemes, with our expertise in undertaking specialist transport planning and traffic engineering projects.

“Both Amey and TPi believe that integrating the two businesses will deliver the best results for all parties including our clients.”

It follows Amey’s acquisition of the national rail consultancy of WYG (formerly White Young Green) in June 2010.

In addition, Amey and its joint venture partner Cespa (AmeyCespa), both wholly owned subsidiaries of Ferrovial, acquired the waste management business Donarbon.