Kildare County Council says it will see how their planned works go this weekend before putting a finishing date on the M7 upgrade.
Delays are expected on the road this weekend due to diversions from 9pm this evening until Sunday night.
It's to allow for the demolition of a bridge between both the Naas North and Naas South junctions.
The widening of the M7 began in late 2017, and there has been a 60 km/h speed limit in place from the M9 interchange towards Johnstown.
It has led to numerous delays for commuters, in particular those travelling from the Naas area.
The project is contracted to finish in April.
Niall Morrissey from Kildare County Council said while they're hopeful that will still be the case, officials will have a better idea after this weekend.
He explained: "We are facing into major infrastructural challenges.
"The demolition works [take place] this weekend, and then the construction of the new bridge will happen a few weeks later... they are major works.
"I don't want to get people's hopes up entirely that we'll be finished [for definite] in April... we'll be examining how we get on this weekend."
The roadworks this weekend mean motorists will have to divert via new slip roads at the junction at the new Osberstown interchange (Junction 9a).
A 'cautionary speed limit' of 25km/h will be in place through a new roundabout.
It has led to concerns over the volume of traffic that's set to be on the road, in particular with the football, hurling and camogie league finals taking place on Sunday.
However, Conor Faughnan - director of consumer affairs for the AA - said there's never an ideal weekend to facilitate the works.
He noted: "On any given weekend, you're going to have a lot of activity.
"It has to be done - I mean, this is a necessary project. They've been working on it for quite a few years now."
Kildare County Council said they will update the public on when they hope to finish the project after this weekend's works.
Gardaí, meanwhile, are informing commuters that the demolition works will be completed before 6am on Monday morning, and traffic will return to the main road.