Gloucester to Nowendoc, he went ahead and built it. Carving the route out of some of the steepest and most rugged countryside in the state was fraught with danger, but by 1961 it was complete. Carson's Lookout, which commemorates his work is between Gloucester and Nowendoc, is a stop off point for the enjoyment of panoramic views. 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. 115 was declared from the intersection with Oxley Highway in Walcha, via Uralla, Balala, Bundarra and Gilgai to the intersection with Gwydir Highway at Inverell, Main Road No. 122 was declared from the intersection with Great Northern Highway (today New England Highway) at Uralla to Yarrowyck, and Main Road No. 124 was declared from Yarrowyck to Bundarra (and continuing eastwards to Armidale) on the same day, 8 August 1928. With the passing of the Main Roads (Amendment) Act of 1929 to provide for additional declarations of State Highways and Trunk Roads, this was amended to Main Roads 115 and 122 and 124 on 8 April 1929. The Department of Main Roads, which had succeeded the MRB in 1932, declared Trunk Road 73 on 11 December 1934, from the intersection with Gwydir Highway at Inverell via Gilgai, Bundarra, Yarrowyck and Uralla to the intersection with Oxley Highway, subsuming the former alignments of Main Road 115 (between Inverell and Bundarra, and Uralla and Walcha; the former route between Bundarra and Uralla via Balala was removed) and Main Road 122; the western end of Main Road 124 was truncated to meet Trunk Road 73 at Yarrowyck. The route was renamed Thunderbolts Way in the early 1990s over a 19-month period in sections: by Gloucester Shire between Walcha and Gloucester on 16 May 1990; by Guyra Shire between Copes Creek (30km south of Inverell) and Bundarra on 19 August 1991; and by Uralla Shire between Bundarra and Walcha on 21 December 1991. The portion of Trunk Road 73 within Inverell Shire (between Inverell and Copes Creek) is still known by its original name, Bundarra Road. The passing of the Roads Act of 1993 updated road classifications and the way they could be declared within New South Wales. Under