Plans for the interchange, which is at junction 19 of the M1, have gone on public display in the Leicestershire village of Swinford, just over the Northamptonshire border.
They include three schemes offering triple-decker roads and two with four l
evels, the last of which would be so high the Angel of the North could fit underneath it.
Ivan Marriott, the Highways Agency project leader said: "It's very, very complex. With two motorways, a major trunk road and local roads all meeting at one point we will still have to keep 100,000 vehicles a day flowing, whichever scheme is eventually constructed.
"The potentially massive cost is a reflection of the complexity."
One of the chief benefits of the scheme, which could be finished by 2011, will be to cut serious accidents, which have claimed 12 lives at the interchange in five years.
However, there is still likely to be some opposition to each of the five plans as farms are affected in each case and one scheme affects the habitat of otters and the protected great crested newt.
However the Highways Agency said it welcomed all views.
Mr Marriott said: "We want as many people as possible to have their say during this consultation and would encourage people to come along to the exhibitions and see for themselves how we plan to address these problems."
For more information go to
www.highways.gov.uk before September 12.
The full article contains 268 words and appears in Northampton Chron & Echo newspaper.
