An OJEU notice puts construction costs in the range of £34m to £38m.
The scheme involves the construction of a new bypass and associated junctions to the east of Dalry and will connect with the existing A737 trunk road.
Transport Minister, Derek Mackay, said: “This notice marks an important milestone for the Dalry Bypass because it ensures that this critical infrastructure project remains on schedule to start construction during the coming financial year 2016/17.
“The new road will be a key driver in improving economic and employment opportunities in the area by providing better journey time reliability and enhancing connectivity. It will also enhance safety by separating local road users from longer distance, strategic traffic.”
For more information and to view the notice click here