, ▁W SD OT ▁calculated ▁that ▁the ▁bus iest ▁section ▁of ▁the ▁highway ▁was ▁its ▁western ▁termin us ▁at ▁SR   1 9 , ▁carrying ▁ 6 , 5 0 0 ▁vehicles , ▁while ▁the ▁least ▁bus iest ▁section ▁was ▁the ▁eastern ▁termin us ▁at ▁Fort ▁Flag ler ▁State ▁Park , ▁carrying ▁ 4 4 0 ▁vehicles . ▁SR   1 1 6 ▁is ▁designated ▁as ▁a ▁part ▁of ▁the ▁National ▁Highway ▁System ▁between ▁SR   1 9 ▁and ▁Indian ▁Island . ▁ ▁History ▁ ▁A ▁road ▁connecting ▁Fort ▁Flag ler ▁State ▁Park ▁and ▁Mar row stone ▁Island ▁with ▁Indian ▁Island ▁and ▁Port ▁Had lock - I r ond ale ▁on ▁the ▁Olympic ▁Pen ins ula ▁has ▁existed ▁and ▁been ▁p aved ▁since ▁the ▁late ▁ 1 9 6 0 s . ▁The ▁road way ▁was ▁cod ified ▁in ▁ 1 9 9 1 ▁as ▁SR   1 1 6 , ▁travel ing ▁east ▁from ▁newly ▁created ▁SR   1 9 ▁and ▁was ▁formally ▁added ▁to ▁the ▁state ▁highway ▁system ▁on ▁April ▁ 1 , ▁ 1 9 9 2 . ▁The ▁bridge ▁over ▁the ▁Port ▁Town send ▁Sh ip ▁Canal , ▁also ▁known ▁as ▁the ▁Port age ▁Canal , ▁was ▁retro f itted ▁by ▁W SD OT ▁in ▁late ▁ 2 0 0 7 ▁and ▁early ▁ 2 0 0 8 ▁to ▁add ▁sa fer ▁rail ings ▁for ▁ped est ri ans . ▁ ▁Major ▁inter sections ▁ ▁References ▁ ▁External ▁links ▁ ▁High ways ▁of ▁Washington ▁State ▁▁ 1 1 6