Illawarra Highway

Illawarra Highway commences at the interchange with Hume Highway at Hoddles Cross Roads west of Sutton Forest and heads in a northeasterly direction as a two-lane, single-carriageway road until it reaches Moss Vale, after which it heads in an easterly direction through Robertson until it reaches the Macquarie Pass, where the road twists through hairpin curves as it descends the Illawarra escarpment through Macquarie Pass National Park and crosses the Macquarie Valley to the coastal region around Shellharbour. After passing through Tongarra, the highway eventually terminates at the interchange with Princes Motorway in Albion Park. The Macquarie Pass, with many hairpin bends and steep gradients, is unsuitable for large and articulated vehicles: trucks are instead advised to use the Mount Ousley Road (route B88), also known as Picton Road. Both Robertson and Moss Vale are country towns with 19th-century buildings still intact, and Macquarie Pass has one of the southernmost stands of Australia's sub tropical rainforest. ==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 (MRB). Main Road No. 260 was declared from the intersection with Hume Highway at the Cross Roads (today Hoddles Cross Roads) west of Sutton Forest to Moss Vale (and continuing north via Bowral to the intersection with Hume Highway at Mittagong), The passing of the Roads Act of 1993 through the Parliament of New South Wales updated road classifications and the way they could be declared within New South Wales. Under this act, Illawarra Highway today retains its declaration as Highway 25, from Hoddles Cross Roads to Albion Park. The route was allocated National Route 48 in 1974. With the conversion to the newer alphanumeric system in 2013, this was replaced with route A48. ==Major intersections==