The East Sussex County Council scheme is due to be completed in time for the opening of the new University Technical College (UTC) on Railway Quay in September 2015.
The facility will include improved bus stops and waiting areas and provide better links between the station, bus services and the college.
The design will incorporate bus stops for east and westbound buses, a taxi rank and a pick-up and drop-off area, while a new real-time passenger information system will improve the connection between bus and rail services.
Cllr Carl Maynard, county council lead member for transport and environment, said: “As a council we’re keen to encourage more people to use public transport for everyday journeys.
“These improvements will allow a smoother connection between rail and bus services, provide better facilities for students and staff at the new college and improve the experience of passengers.”
The £200,000 project is being funded by a combination of county council funds set aside for local transport improvements and contributions secured from local developments.
The new layout is being developed in consultation with local organisations including bus and rail operators. Work is due to begin in March 2015.
People can view the plans online from Friday, October 10 2014 at www.eastsussex.gov.uk/haveyoursay and have until Friday, October 31 2014 to submit any comments. More information is available by calling 01273 482500 or emailing Infrastructure.Delivery@eastsussex.gov.uk