 Denver also has a nearly complete beltway known as " the 470 's " . These are SH 470 ( also known as C @-@ 470 ) , a freeway in the southwest Metro area , and two toll highways , E @-@ 470 ( from southeast to northeast ) and Northwest Parkway ( from terminus of E @-@ 470 to US 36 ) . SH 470 was originally intended to be I @-@ 470 and built with federal highway funds , but the funding was redirected to complete conversion of downtown Denver 's 16th Street to a pedestrian mall . As a result , construction was delayed until 1980 after state and local legislation was passed . I @-@ 470 was also once called " The Silver Stake Highway " , from Gov. Lamm 's declared intention to drive a silver stake through it and kill it . 
