Multiple police and fire service vehicles have been seen on the Portway this morning, causing slow moving traffic.
The details of the incident are not yet known, however Bristol Live understands there has been reports of someone in the water.
A passenger on a local bus saw several emergency service vehicles standing by shortly after 9am this morning (Fri, Nov 5).
According to local traffic reports there is queueing traffic, and traffic heavier than normal on A4 Portway in both directions near A4176 Bridge Valley Road. near the Clifton Suspension Bridge.
Any delays will add to traffic issues in the city centre this morning following a serious incident on the M32 in the early hours which has left a woman with life-threatening injuries.
Avon and Somerset police have been contacted for comment.
This is a live, breaking news story and we will bring you more information as we get it. Follow the live blog below for updates.