Near Dillon Road, the parkway interchanges with US 287 in Lafayette before reentering Broomfield near the end of the toll portion at 96th Street.

In August 2001, the cities of Westminster and Arvada put into motion the completion of an extension of Northwest Parkway, sometimes termed W-470, to connect to SH 470, I-70, and US 6 in Golden.

The city of Golden struck down the proposal, but, in a compromise with the Colorado Department of Transportation (CDOT), an environmental impact statement (EIS) was done.

According to the Boulder Daily Camera, this was the fourth time in two years that operations of an existing toll road in the US had been turned over to a private company under a long-term lease.

[5] Northwest Parkway had been consistently generating less income than envisioned when it was funded by three local governments—Broomfield, Lafayette, and Weld County.