1、工程簡介
尖峰頂隧道為公路長隧道,左、右線分離布設。尖峰頂左線隧道起訖樁號為LK104+715~LK105+849,長度為1134m;尖峰頂右線隧道起訖樁號為RK104+711~RK105+864,長度為1153m。兩端洞口段設置為小凈距,左線江門端小凈距里程為LK104+715~LK104+884,長度169m,羅定端為LK105+644.5~LK105+849,長度204.5m;右線江門端小凈距里程為RK104+711~RK104+891.5,長度180.5m,羅定端為RK105+680~RK105+864,長度184m。江門端洞門采用端墻式,羅定端洞門采用削竹式。