The footbridge, which provides a pedestrian link between Park Street either side of the A27 and the bus stop on the westbound carriageway, will have one of its access ramps replaced and other maintenance carried out on the bridge.
The access ramp from the bus stop on the westbound A27 to the footbridge and the bus stop will be closed for 3 months while it is rebuilt.
Ahead of the work, a public exhibition is being held at Falmer Village Hall on Tuesday 12 January from 3pm to 7pm. Representatives from Highways England and its contractors will be available to answer questions about the work.
Highways England asset manager for Sussex, Peter Phillips said:
We will be maintaining the footbridge over the A27 near Falmer to provide pedestrians with a safe way to cross the busy A27 and access the bus stops. The work will involve rebuilding the access ramp from the bridge to the bus stop on the westbound A27. I advise anyone interested in finding out more about the work and how it may affect them to attend the public exhibition or contact us.
Narrow lanes and a 50mph speed limit will be in place on the westbound A27 during the work and one lane closed on the westbound exit slip road.
Overnight carriageway closures of the A27 between the slip roads will be required when removing and installing the footbridge.
Members of the public should contact the Highways England customer contact centre on 0300 123 5000.
Journalists should contact the Highways England press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.