There has been a crash on SH2/Hewletts Rd at the curve between the Tauranga Bridge Marina and Tasman Quay.
The crash has occurred in the Mount-bound lane, and there are reports of traffic building up.
It is unknown at this stage if there are any injuries.
Emergency services are at the scene.
A SunLive reader who is out on the Tauranga harbour reports hearing the collision.
"I am out on the water in a boat and we heard the crash from here," says the SunLive reader. "It was on Hewletts Rd, about ten minutes ago."
At the scene? Phone 0800 SUNLIVE or email email@example.com