There is a broken down HGV northbound on the A82, Traffic Scotland has warned.
The incident is located between Renton and Milton, after the Lomondgate roundabout causing a lane to be blocked.
Click here for all the latest news from Dumbarton, the Vale and the surrounding areas
Motorists are advised to exercise caution on approach as there will be possible delays.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here