Green services provider Glendale has completed a project to allow a disused railway line connecting Portishead and Bristol to reopen.
The company has finished a £120,000 clearance programme across 3.3 miles of discontinued line.
It will allow a topographical survey to be carried out, enabling the next stage of engineering a design work.
The work is part of the £60m MetroWest programme to reopen existing railways and improve transport links to Bristol. The project is scheduled for completion in 2019.
Jon Eglin, arboriculture manager for Glendale, said: "The delivery of this large project, with limited access and an unusual environment, is a credit to the teams at Glendale.
"Reopening the line will have huge benefits for the area. Portishead is a fast growing town, badly in need of a connection to the city, and improved transport links for commuters will decrease congestion on our roads."