It is approx 800m in length.
The new Lyreen Avenue and Lyreen Bridge officially opened to traffic on Monday 20 December.
Lyreen Avenue, which connects the Moyglare and Dunboyne Roads is approximately 800 metres in length and includes new cycle tracks, footpaths, crossing facilities as well as signalised junctions at the Dunboyne Road and Moyglare Road.
It is hoped that Lyreen Avenue and the adjoining greenway will ease congestion in the town centre.
It will also connect the town centre and the Mariavilla development to the new educational campus currently under construction to the north of the town and will benefit the Maynooth community as a whole.
Councillor Naoise Ó Cearúil, Cathaoirleach of the County of Kildare commented:" This is a critical piece of infrastructure that will help to alleviate traffic in the town.
Planning permission was granted in 2018 and since then 380 homes and associated supporting infrastructure have been delivered.
"Mariavilla has delivered critically needed homes in Maynooth and is the national exemplar in Strategic Housing Developments."
Cllr Brendan Wyse, Mayor of the Clane Maynooth Municipal District of Kildare said: "We are very conscious of the need to continue to improve transport infrastructure in our university town as it grows, and the new Lyreen Avenue will play a major part in that improvement."
Sonya Kavanagh, Interim Chief Executive, Kildare County Council said: “This is a significant infrastructure project for Maynooth and one that we believe will be of huge benefit.
"We are committed to delivering and enabling infrastructure in our county that sustains mobility and access and positions Kildare to achieve sustainable growth and this project helps us to deliver that,” she concluded.

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