Following the green light from Transport Scotland for the £116.6m scheme, Network Rail has started construction of the Levenmouth Rail Link.
National Highways is starting work on a series of enhancements on more than 60 miles of dynamic hard shoulder motorway by upgrading the central reservation safety barriers.
A public consultation will be held by Cardiff Council on how the city can improve the transport network using data and technology.
Liverpool City Council had originally planned to demolish the flyover above The Rocket junction, which feeds into the M62, and create a roundabout and tunnel.
Over a nine-day line closure, Network Rail engineers worked through Storm Eunice and Storm Franklin to deliver a £15 million investment to improve Brighton Main Line.
HS2 has announced six environmental projects, due to start in Staffordshire in 2022 as part of a £1.5m HS2 funding package.
A Consultation Call to discuss the key issues facing the region in its ambitions for strategic transport investment and planning will be held this week by Transport for the North (TfN) Board.