Motorists were asked to delay their trips or expect delays, and take care when passing the scene.
An alternative route involved driving via SH29 over the Kaimai Range then SH27 and SH26 before rejoining SH2.
Police said initial reports were received around 1.50pm.
The fire was reported to be between Barrett Rd and Te Karaka Drive.
Fire crews from Ōmokoroa, Greerton, Katikati, Tauranga, Waihī and Te Puke attended according to an online Fire and Emergency incident report.
Power outage
Powerco has reported an unplanned power outage at Whakamārama.
The power cut occurred at 1.47pm and is affecting 179 properties in the Minden area.
A power cut at 1.53pm is affecting 34 properties in the Whakamārama area.
Powerco advised a site investigation is under way, with field crew en route to the scene.
Power is expected to be restored by 6pm.
At the scene?
Phone 0800SUNLIVE or email newsroom@thesun.co.nz.