The £5m crossing would traverse the River Medlock, connecting Park Bridge in Ashton-under-Lyne to the southern end of Northern Roots at Snipe Clough.
A consultation on the Aecom-designed proposal has launched and runs to 13 December. The projected completion date for the bridge is 2023.
The scheme is aimed at improving walking and cycling access between Oldham and Tameside and cutting car journeys on nearby roads.
Currently there are around 22,500 daily car trips on the A627 and 16,900 on the B6194.
The 140-metre bridge would also provide a link to Oldham Council’s 160-acre Northern Roots, billed as the UK’s largest urban farm and country park.
Initial funding for the design stage was funded through the Greater Manchester Mayor’s Bee Network, a programme that is designed to revolutionise travel across the city region.
Further funding from the Greater Manchester Mayor’s Bee Network fund would be needed to build the bridge.
From an initial five designs, a preferred option has now been chosen: a steel girder bridge that will weather in time, creating an “industrial look” that is fitting with the area, according to Oldham Council, which is running the consultation.
Cllr Arooj Shah, leader of Oldham Council, said: “Oldham Council is committed to providing safer and better transport links for our residents.
“That’s so people can access employment and training opportunities in other areas, but also so they can get out and enjoy what the borough has to offer.”
Oldham and Tameside councils are working in conjunction with Transport for Greater Manchester to deliver the scheme.
Cllr Warren Bray, Tameside Council executive member for transport and connectivity, said: “This project will be great for connectivity between the two boroughs. It will improve walking and cycling infrastructure to make it easier, safer and more attractive to travel on foot or by bike, which are healthier, greener, more sustainable travel options.”