Continued delays in the construction of the Bradford Bypass meant that the approximately 50,000 cars per day transiting between the two highways used Davis Drive, the former northern end of the 404. This caused massive traffic problems in downtown Newmarket. A bypass was possible by driving a short distance west of the 404 to Leslie Avenue, then north to Green Lane, which connected westward to Yonge Street. However, Green Lane was a two-lane dirt road and spanned the East Holland River using a single-lane bridge built in the 1910s. Several upgrades were carried out to improve this route, including an extension of the 404 to Green Lane, and the widening of Green Lane to a four-lane route across Yonge to Bathurst Street. This route is currently known as the Newmarket Bypass, and opened to Bathurst in 2004.