At the end of 2006, after 20 years of construction, a new road (a by-pass) from La Paz to Coroico was opened to public. This new route features modern construction (bridges, drainage, etc.), multiple lanes, pavement, guardrails and many other elements that make it considerably safer than the original route. As a result, the original North Yungas Road is currently much less used by traffic, although an increasing number of adventure travellers bike it for the thrills.
Taken from: I Can't Believe It