Sydney-Newcastle Freeway : Freeway F3 : Section : Mount White to Ourimbah : National Highway project No. 212A : environmental impact statement

The Sydney-Newcastle Freeway (F3) is planned as the principal road link between Sydney, the Gosford-Wyong area, and Newcastle. It will also form part of the inter-capital-city route for the National Highway between Sydney and Brisbane. The F3 has been constructed from Berowra to CaIga and construction has commenced on the Ourimbah to Wallarah Creek Interchange (north of Wyong) section. At present, highway travel between CaIga and Ourimbah is via the winding Pacific Highway which passes through the City of Gosford, or via the more circuitous Peats Ridge route. The level of traffic service is low on both highways and, because of the increasingly high traffic volumes encountered in the area and the capacity constraints on these highways, a freeway is required. The Commonwealth Government and the States are co-operating in the development of a declared system of National Highways. In reviewing funding allocations, the Commonwealth Department of Transport has nominated the Mt. White/Calga — Ourimbah section of National Highway as a high priority work. The project involves the construction of 21.3 kilometres of six- lane, dual carriageway road with interchanges at CaIga, Kariong, Somersby and Ourimbah, five million cubic metres of earthworks, the employment of a probable workforce of 350 persons, and eighteen bridges. The largest bridge, required for crossing Mooney Mooney Creek, will be 480 m long and have a waterway clearance of 73 m. This section of the proposed Freeway has a particularly high benefit/cost ratio (4.9/1) . It will reduce the travel distance on the Calga-Peats Ridge-Ourimbah route by 11.6 kilometres while reducing the travel distance between CaIga and Kariong by 4.8 kilometres for Gosford travellers. In compliance with the environmental policies of both the State and Commonwealth Governments, the Department of Main Roads, N.S.W., has undertaken comprehensive investigations into the environmental effects of the preferred route for the Freeway and of feasible alternatives. This Environmental Impact Statement presents particulars of these investigations.

悉尼-纽卡斯尔高速公路（F3）被规划为连接悉尼、戈斯福德-怀昂区域与纽卡斯尔的核心公路干线。同时，该公路亦将成为悉尼至布里斯班国家干线公路（National Highway）跨首府城市通道的组成部分。F3公路已完成贝里瓦（Berowra）至卡尔加（Calga）段的建设，怀昂（Wyong）以北的奥里姆巴（Ourimbah）至沃拉溪互通立交段也已开工。目前，往返卡尔加与奥里姆巴的公路通行需绕行蜿蜒穿过戈斯福德市的太平洋公路（Pacific Highway），或是路线更迂回的皮茨岭（Peats Ridge）公路。两条现有公路的交通服务水平均较低，且该区域交通流量日益攀升，同时两条公路均存在通行能力瓶颈，因此亟需新建一条高速公路。联邦政府与各州正协作推进已公布的国家干线公路系统建设。在评审资金分配方案时，联邦交通部已将国家干线公路的芒特怀特/卡尔加—奥里姆巴段列为高优先级工程。本项目将建设21.3公里长的双向六车道分离式公路，配套卡尔加、卡里翁（Kariong）、萨默斯比（Somersby）及奥里姆巴四处互通立交，土石方工程量达500万立方米，预计雇佣350名施工人员，新建桥梁18座。其中用于跨越穆尼穆尼溪（Mooney Mooney Creek）的主桥全长480米，通航净空达73米。该拟建高速公路段的效益成本比尤为可观，达4.9:1。它将使卡尔加-皮茨岭-奥里姆巴路线的通行里程缩短11.6公里，同时为戈斯福德出行者减少卡尔加至卡里翁段4.8公里的通行距离。为契合州政府与联邦政府的环境政策，新南威尔士州公路局（Department of Main Roads, N.S.W.）已针对该高速公路优选路线及可行替代方案的环境影响开展了全面调研。本环境影响报告书（Environmental Impact Statement）即详述了上述调研成果。