you east coast guys need to remember that adelaide is a lot smaller population and business wise than over there. the city probably doesn't need expressways and freeways going everywhere.
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Originally Posted by blueoval
What if the SEW was to add 1 more lane to its 3 lanes,fit a concrete barrier in between (ala Dyson road hallett cove road) and run 2 lanes either way
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can't happen. if they had some forethought when they built it, they would've made all the overpasses wider 'just in case'!! all the overpasses are only wide enough for the 3 lanes and emergency lanes each side.