The viaducts carry the M8 Motorway through the north of Glasgow and are situated between Junction 16 (Craighall) and Junction 17 (Charing Cross).
As part of its strategic review, Transport Scotland is considering three options: repairing the viaducts, replacing them, or removing them entirely.
Removing them would require the closure of part of the M8. Under this scenario, all through‑traffic would be rerouted via the M74 on the south side of the city.
Officials estimate it would cost less than £125m and take 1-2 years to complete.
However, a report noted that the M74 is already operating near capacity, raising questions about how well it could absorb the extra diverted traffic.
Repairing the viaducts could cost from £125m to £200m and take up to three years to complete.
The most expensive option, estimated at £200m-£500m, would be to replace them completely, with the work potentially lasting up to four years.
Transport Scotland acknowledged that removing a section of the motorway would likely cause significant disruption, with major impacts on congestion, journey times and resilience across the wider road network.
A Transport Scotland spokesperson said: “We are keen to hear the thoughts of the local communities and road users on the permanent solution for the M8 Woodside Viaducts project.
“Public engagement events are being held to provide local communities and road users with the opportunity to learn more and to share their feedback on the options.”