UPDATE: The road has reopened fully.

A busy Glasgow road has been left restricted due to an emergency incident this morning.

Glasgow City Council has said the A739 Clyde Tunnel approach road southbound at the A814 Clydeside Expressway westbound off-slip is currently reduced to one lane southbound following a crash.

It is understood 999 crews are in attendance at the incident.

The local authority has said 'heavy congestion is expected', while they have urged road users to 'avoid the area'.

Currently, it is unclear if anyone has been injured during the smash, however, we have contacted Police Scotland for comment. 

More as we have it.