"When complete, this upgrade will make the intersection safer and easier to use for all road users."
Wilton said Waka Kotahi had worked closely with the rugby club throughout the planning process.
"We have also resealed a section of the club's carpark to provide additional parks and completed new line marking."
Whakarewarewa Rugby Community Sports Inc. President Warena Morgan said the club was looking forward to having the upgraded entrance way.
"Working with Waka Kotahi to agree on a more functional access to the club has been a smooth process, and our perspective and feedback has been valued.
"The new access is going to be very valuable, especially on match days when the car park is heavily used," Morgan said.
Signage has been installed at the old and new access points to alert the public. Work on the left-turn slip lane at Sala St is scheduled to start later this month.
The $17 million Eastern Corridor Stage One project is part of the Connect Rotorua programme of work to futureproof two of Rotorua's key corridors, State Highway 30/Te Ngae Rd and State Highway 30A/Amohau St.
It involves upgrades of key intersections, safety improvements, some four-laning, and a new shared path and on-road cycleway.
Construction started in February and is expected to be completed in late 2021.