The Queensferry Crossing's going to be closed over the next two nights to test the new automated barriers that have been installed. Drivers are being told to plan ahead.
The northbound carriageway of the M90 shuts Tuesday (October 31) from Scotstoun (junction one) to Ferrytoll.
The same route is then shut southbound on Wednesday (November 1).
Both closures run 10pm to 5am and traffic will be diverted to the Clackmannanshire Bridge..
It's to test and commission the new automated barrier system, designed to divert traffic onto the Forth Road Bridge quicker if the Queensferry Crossing needs to close.
A trial of the barriers runs on Saturday night (November 4). This is to make sure they are working correctly.
Traffic will be diverted over the Forth Road Bridge from 11pm until 5am.
Drivers are being told to expect delays at the beginning and end of the closure period as traffic will be stopped while the diversion is put in place and removed.
More work is scheduled for 2024 to fully automate the system and install intelligent road studs, which will light the way to the diversion.
Chris Tracey, BEAR Scotland South East Unit Bridges Manager said: “Work has progressed well on the project to install the new automated barrier system on either side of the Queensferry Crossing. Overnight carriageway closures are required so that we can test the system and ensure it is working as intended before we carry out a full trial with traffic.
“These barriers are expected to dramatically reduce the time it takes to implement a diversion via the Forth Road Bridge, removing the need for most of the manual work to set up traffic management.”