North East Lincolnshire Council has appointed the Colas Siac joint venture to construct an £8m link road.
Part of the £42m South Humber Industrial Investment Programme, 1.5km of road will be upgraded and 1km of completely new road will be built to open up development land west of Grimsby.
The project will enhance an existing private road to adoptable highway standards, bringing it under the council’s responsibility and adding streetlighting, a shared footway and cycleway.
North East Lincolnshire's cabinet member for regeneration, Cllr Peter Wheatley, said: 'This new road will really change the way traffic moves between our ports of Grimsby and Immingham.
'Once complete, the new road will open up a huge stretch of development land west of the town.'
The Greater Lincolnshire Local Enterprise Partnership has contributed £2m towards the scheme.
Work will start on the road later this month and is expected to take 16 months to complete.