On Thursday, a multi-million pound bypass will open in Powys, which has been in the planning for 70 years.
A haulier said Newtown Bypass would make a big difference because it would take 45 minutes in the city, while local AM said it was a "serious" day.
The Welsh government said the road will reduce congestion in the city center by about 40%.
A public announcement in 1949 shows that circumvention was considered by the former Montgomeryshire County Council.
The 6.4-km road leads south of the city with two lanes in one direction and one in the opposite direction to provide points of overtaking.
For many in the area it is enormously important.
Colin Owen, who runs Owen and Sons coal and agricultural traders near Llandinam, said Newtown was called the "Mid Wales Parking Lot" because of the long delays.
"People were afraid to go to the city because they did not want to pull out of the queue because they would only join once again," he said.
"It will make a big difference, and it will ease traffic and save us a lot of time as we come through Newtown."
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Life-long resident Joy Hamer, 86, who lived on the main road for many years, said that traffic problems had long been a big part of local life.
"It will be a big deal for the city," she added.
Newtown Mayor Sue Newham said, "A new chapter has begun for our city, and we intend to seize every opportunity."
And city councilman Ed Humphreys said, "Change is the elixir of life for Newtown."
The ring road will open less than three years after work on the £ 95m project commences. But it was a long way.
Why the leftovers?
A public announcement by the Council, published in August 1949, called for "schoolchildren aged 16 and over" to work as counting devices to count vehicles for a traffic survey.
In the 1960s and 1980s, there was also discussion about a bypass, but the green light never came, as many were mixed on the idea.
In recent years, city congestion has worsened. This situation was mainly caused by traffic lights replacing a roundabout.
And people were frustrated, including claiming that traffic was driving out buyers.
Increasing congestion led to a change in public opinion, according to Montgomeryshire Conservative AM Russell George.
The Welsh Government said Newtown's industrial development was "hampered by congestion problems."
In 2008, the project confirmed that it would fund the project and work should begin in 2011.
However, it was suspended after an expenditure review in 2010.
In 2011, Ministers were asked to petition 10,000 names of Mr. George requesting the work to commence.
Construction began in March 2016, but after a further shutdown, although the contractors delivered the project ahead of schedule.
Mr. George said the inauguration of the bypass was a "momentous opportunity."
The launch is being carried out by Transport and Trade Minister Ken Skates, who said that this would "lead to shorter travel time and improved air quality in the region".