Over 1,000 construction jobs will be created in the next two years as part of a major upgrade of the N11 and N7 road networks.
BAM Contractors today signed a public-private partnership contract worth €282m with the National Roads Authority on behalf of the Department of Transport.
The project will see BAM design and build a new freeflow junction at Newlands Cross on the N7 and carry out several works on the N11.
There will not be any tolls on the new sections of road that they are constructing.
As part of the deal signed, they will be responsible for the operation and maintenance of the road sections for 25 years.
The new junction at Newlands Cross will enable motorists to drive from the south to the north of the country without hitting any traffic lights.
The works on the N11 include the construction of a 16km dual carriageway linking the end of the Arklow bypass with the end of the Ashford bypass, as well as two new interchanges at the Beehive junction and at Jack White's crossroads.
A service area will also be built at Ballyellin on the Gorey bypass.
Construction on the projects is expected to begin in May.