Turnover also increased 10 per cent to £474.4 million in the six months to the end of June up from £430.7 million last time. Its capital projects and business services divisions achieved good growth and overall it is on track to hit its growth targets for the year, the company said.
The company took a £1.9 million one-off hit after it pulled out of an underperforming contract and costs relating to the closure of two businesses.
Trading at its highways business continued to show good progress, reaping the rewards of local authorities outsourcing maintenance on the local road networks.
In early June Alfred McAlpine picked up the first big roads job to be let following the general election - a £50 million contract to upgrade the A494 in north east Wales for the Welsh Assembly.