Council chiefs plan to change the road layout near to Parkway Station - and motorists have been warned to expect delays.
Temporary barriers are being introduced, from June 14, under Parkway railway bridge, on Brierly Furlong, to help cyclists and pedestrians social distance.
Signs and road markings will be in place to notify road users of the new road layout and direct travellers.
As schools, businesses and shops tentatively begin to reopen, it's anticipated train services will see a surge in passengers.
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Historically this is a pinch point for people walking or cycling as the road narrows under the bridge.
Council bosses were keen to stress the changes are a 'temporary measure'. A council spokesperson said delays were expected and apologised in advance.
Cllr Steve Reade, Cabinet Member for Planning, Transport and Strategic Environment, said: “These changes are part of our emergency response to the COVID-19 pandemic in order to help stop the spread of the virus and save lives in our local communities as lockdown eases.
"The council has a statutory duty to make it as easy as possible to follow rules for social distancing in public places and we are currently working on several projects to make public space safer for everyone.
"These projects will also help to maintain some of the positive changes seen during this time, such as an increase in cycling and fewer cars on our roads.
“We will be announcing additional projects across South Gloucestershire over the coming weeks, and due to the speed of their introduction they will be subject to regular constructive review.”
Three education campuses - Abbeywood Community School, South Gloucestershire & Stroud College and Bristol Technology & Engineering Academy - are located near to the railway bridge meaning that a high proportion of pedestrians and cyclists are children and young people and their numbers will continue to grow.
The council plans to roll out a number of similar projects in the coming weeks across the district.
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