Also in attendance were local councillors and members of B Company (Suffolk) 1st Battalion Royal Anglian Regiment, the successors to the Suffolk Regiment following amalgamation.
Work started on the road in July 2022 and there was a clear vision – to create a route that would ease congestion, improve safety and support the growing community in Haverhill.
The route will now form part of the A1307, linking with the A143, while the existing A1307 will be downgraded to a C road, reflecting its new role in the local network.
Stacy Brett, Deputy Managing Director for Persimmon Homes Suffolk, said: “It is an honour to stand here today as we open this new road. This is a key piece of infrastructure that will benefit everyone who lives in, works in, or visits the town.
“The new Suffolk Regiment Way is a cornerstone of our flagship Boyton Place development, which is bringing more than 1,000 new homes to the town, as well as shopping facilities and a café space.
“We're proud to not only be bringing these new homes to the town but also to have delivered this significant highways upgrade which will serve Haverhill for generations to come.”