suburb of Homebush West, the A3 becomes Homebush Bay Drive. Homebush Bay Drive joins Concord Road in the suburb of Concord West. The A3 designation continues on Concord Road. Concord Road crosses Parramatta River via Ryde Bridge. North of the river, the route continues northeast as Church Street, but at the intersection with Victoria Road it veers left to join Devlin Street. The new route gazetted in 1993 ends at the intersection of Devlin Street with Blaxland Road, in the suburb of Ryde. North of Blaxland Road, the route continues as gazetted in 1976 via Lane Cove Road. It crosses the Lane Cove River via De Burghs Bridge. North of Lane Cove River, the route continues as Ryde Road. North of the junction with Pacific Highway (A1), the route continues via Mona Vale Road until the end of the route at Mona Vale, at the junction with Pittwater Road (A8). History The passing of the Main Roads Act of 1924 through the Parliament of New South Wales provided for the declaration of Main Roads, roads partially funded by the State government through the Main Roads Board (later the Department of Main Roads, and eventually Transport for NSW). Main Road No. 139 was declared along Devlin Street between Gladesville Road (today Blaxland Road) in Ryde (and continuing northwards via Eastwood and Epping to the intersection with Pennant Hills Road in Pennant Hills), Main Road No. 162 was declared along Wicks, Pittwater and Lane Cove Roads through Ryde, Ryde Road through Gordon, then via St. Ives to the intersection with Pittwater Road in Mona Vale, and Main Road No. 200 was declared from the intersection of Great Western Highway and Concord Road in Concord, along Concord Road to Parramatta River (using the punt service between Rhodes and Meadowbanks) then along Bowden Street to Parramatta Road (today Victoria Road), on the same day, 8 August 1929. The punt service across Parramatta River was replaced by Ryde Bridge in 1935, changing the alignment to today's route along Church Street to Ryde; Ryde Council constructed a new alignment through Ryde, changing from Wicks and Pittwater Roads to today's Lane Cove Road in September 1961. What is now called A3 was initially designated to become a major north–south metropolitan arterial route in 1964, when the route incorporating several existing local arterial roads was designated as 'Ring Road 3'. After 1964, upgrading projects were commenced, with the