The Waikato road where a fatal truck crash happened remains closed this morning.

A truck and a tow truck collided late last night, one truck driver died, while the other sustained minor injuries.

The crash occurred on the Mangawhero Bridge on State Highway 27 south of Matamata just before 11pm.

The Serious Crash Unit and the Commercial Vehicle Investigation Unit are investigating.

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The road was still closed early this morning with diversions in place.

Northbound traffic carried on via Hinuera Road.

Southbound traffic was diverted via SH24, SH29 and then back to SH27.