▁ 5 6 ▁days ▁of ▁continuous ▁sun light ▁every ▁summer ▁and ▁ 3 0 ▁days ▁of ▁polar ▁night ▁every ▁winter . ▁ ▁Transport ation ▁ ▁Most ▁roads ▁in ▁In uv ik ▁are ▁p aved . ▁There ▁are ▁both ▁concrete ▁and ▁metal - gr ill ▁side wal ks ▁alongside ▁the ▁roads . ▁ ▁The ▁D emp ster ▁Highway ▁provides ▁access ▁to ▁In uv ik ▁for ▁the ▁majority ▁of ▁the ▁year . ▁However , ▁the ▁highway ▁re lies ▁on ▁fer ries ▁and ▁ice ▁brid ges ▁to ▁get ▁across ▁the ▁rivers . ▁It ▁is ▁thus ▁closed ▁during ▁the ▁time ▁of ▁free ze - up ▁( rough ly ▁late - Oct ober ▁to ▁mid - Dec ember ), ▁for ▁ice ▁to ▁form ▁and ▁allow ▁ice ▁brid ges , ▁and ▁th aw ▁( rough ly ▁mid - May ▁to ▁mid - J une ) ▁to ▁allow ▁the ▁fer ry ▁to ▁run . ▁At ▁these ▁times , ▁there ▁is ▁air ▁access ▁only . ▁ ▁The ▁main ▁air port ▁is ▁In uv ik ▁( M ike ▁Z ub ko ) ▁Airport . ▁There ▁is ▁also ▁a ▁general ▁av iation ▁air port , ▁In uv ik / Shell ▁Lake ▁Water ▁Aer od rome . ▁ ▁When ▁the ▁Mack en zie ▁River ▁is ▁ice - free , ▁Northern ▁Transport ation ▁Company ▁Limited ▁provides ▁a ▁commercial ▁bar ge ▁service ▁from ▁Hay ▁River , ▁on ▁Great ▁S lave ▁Lake ▁to ▁the ▁regional ▁terminal ▁in ▁In uv ik . ▁The ▁annual ▁se al ift ▁moves ▁supplies ▁as ▁far ▁east ▁as ▁T alo yo ak ,