Monday - Friday7:30 a.m. - 5:30 p.m.
1968 - I-470 officially approved and added to the Interstate and Defense Highway System
1976 - I-470 Ad Hoc Commission recommends that I-470 be withdrawn from the Interstate and Defense Highway System
1980 - C-470, the substitute project for I-470, begins construction
1985 - E-470 Authority is created
1987 - W-470 Authority is created
1990 - C-470 is completed
1991 - E-470 Segment 1 is completed
1992 - W-470 Authority suspends operations and closes
1999 - Northwest Parkway Authority is created
2000 - C-470 Extension from I-70 to US 6 in Golden is completed
2001 - The Northwest Quadrant Feasibility Study, which identified improvements to existing streets and highways, is completed. The study recommended right-of-way preservation for major corridor improvements (200' to 300') along Indiana Street, SH-72, SH-93 and US-6 in lieu of a specific alignment for the beltway
2003 - E-470 Segment 2 is completed
2003 - Northwest Parkway is completed
2003 - CDOT started a formal Environmental Impact Statement process to study transportation improvements that would provide a connection between the Northwest Parkway and C-470
2008 - CDOT completes the Northwest Corridor Transportation and Environmental Study (TEPS). This study replaced CDOT's EIS process when it became clear funds were not available to implement any of the recommended alternatives. This study narrowed the list of alternatives for connecting Northwest Parkway to C-470 to freeway, tollway, regional arterial improvements, and combined (freeway/tollway with improvements to Indiana/McIntyre)
2008 - Jefferson Parkway Public Highway Authority is created
2013 - City of Golden completes conceptual improvement plans for US 6 and SH 93 and signs a Memorandum of Understanding with CDOT
Over the last 20 years, highway construction costs have more than doubled, yet gas taxes have not changed.
Administration & Courts Facility 100 Jefferson County Parkway Golden, Colorado 80419 (303) 279-6511
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