本工程北线起讫里程NK0+028~NK3+029,全长3001m,其中明挖敞开段292m,明挖暗埋段847m,陆域暗挖段612m,江底暗挖段1250m;南线起讫里程为SK0+226~SK2+928.084,全长2702.084m,其中明挖敞开段267.576m,明挖暗埋段570.992m,陆域暗挖段611.516m,江底暗挖段1252m;A匝道起讫里程AK0+047~AK0+672.209,全长625.205m其中明挖敞开段125m,明挖暗埋段213m,暗挖段287.205m;B匝道起讫里程BK0+48.597~BK0+609,全长560.403m,其中明挖敞开段135m,明挖暗埋段124m,暗挖段301.403m;C匝道起讫里程CK0+087.93~CK0+841,全长753.07m,其中明挖敞开段126m,明挖暗埋段290m,暗挖段337.07m;D匝道起讫里程DK0+042~DK0+762.867,全长720.867m,其中明挖敞开段134m,明挖暗埋段264m,暗挖段322.867m。