Abstract: An interchange system includes a first carriageway, a second carriageway, a first ramp, a second ramp, a third ramp, a fourth ramp, a connecting deck, a first traffic weaving section, and a second traffic weaving section. The first ramp and the second ramp extend from a first portion of the first carriageway. The third ramp and the fourth ramp extend from a first portion of the second carriageway. The first ramp is elevated relative to the second ramp. The fourth ramp is elevated relative to the third ramp. The connecting deck connects the first ramp to the fourth ramp. The first traffic weaving section is defined between the first ramp and the connecting deck. The second traffic weaving section is defined between the fourth ramp and the connecting deck. A primary ramp extends from the first traffic weaving section; a secondary ramp extends from the second traffic weaving section.