The remaining bidders are now due to receive more detailed documents in July to submit detailed submissions at the start of next year.
The winner is due to be announced in summer 2012 for a start on the contract in 2013.
Five teams initially bid for the job covering maintenance and refurbishment work across the borough’s 259 miles of road carriageways and 458 miles of footways.
Amey and Colas/Scott Wilson are both out of the running.