abel ny ▁fair way , ▁a ▁cable - st ay ed ▁bridge ▁over ▁the ▁Pet rov sky ▁fair way ▁and ▁a ▁double - deck ▁bridge ▁over ▁the ▁Sea ▁channel . ▁The ▁Central ▁section ▁of ▁WH SD ▁incorpor ates ▁a ▁whole ▁complex ▁of ▁artificial ▁structures ▁and ▁is ▁considered ▁the ▁most ▁challeng ing ▁part ▁of ▁the ▁road ▁in ▁respect ▁of ▁engineering ▁solutions ▁and ▁construction ▁process . ▁ ▁Description ▁ ▁The ▁Western ▁High - Speed ▁Diam eter ▁is ▁a ▁ 4 6 . 6 - kil omet re ▁road ▁with ▁a ▁total ▁length , ▁including ▁all ▁exit ▁and ▁entry ▁ram ps ▁and ▁inter changes , ▁of ▁over ▁ 7 0 ▁kilometres . ▁It ▁features ▁ 1 5 ▁inter changes , ▁and ▁its ▁width ▁var ies ▁from ▁four ▁to ▁eight ▁lan es . ▁The ▁new ▁road ▁is ▁expected ▁to ▁ease ▁con g estion ▁in ▁the ▁historic ▁centre ▁of ▁St ▁Petersburg , ▁the ▁St ▁Petersburg ▁Ring ▁Road ▁and ▁road ▁network , ▁en abling ▁drivers ▁to ▁cross ▁the ▁city ▁in ▁less ▁than ▁ 2 0 ▁minutes . ▁ ▁The ▁main ▁objects ▁of ▁the ▁Central ▁Section ▁of ▁the ▁WH SD ▁ ▁C able - st ay ed ▁bridge ▁over ▁the ▁Kor abel ny ▁Fair way ▁ ▁An ▁unusual ▁design ▁was ▁chosen ▁for ▁the ▁Kor abel ny ▁bridge . ▁Each ▁p yl on ▁column ▁is ▁incl ined ▁in wards ▁and ▁also ▁towards ▁the ▁bridge ▁centre ▁line . ▁Such ▁an ▁architect ural ▁solution ▁repe ats ▁the ▁geometry ▁of ▁a ▁draw bridge , ▁one ▁of ▁the ▁most ▁recogn izable ▁symbols ▁of ▁St .