ðə lˈuːp bᵻtwˌiːn nˈɔːɹθ stɹˈæθfiːld ænd ɹˈoʊdz hˈæzbiːn dˈuːplᵻkˌeɪɾᵻd wɪð ɐn ˌʌndɚpˈæs æz pˈɑːɹt ʌvðə nˈɔːɹðɚn sˈɪdni fɹˈeɪt kˈɔɹɪdˌoːɹ wˈɜːks.
The loop between North Strathfield and Rhodes has been duplicated with an underpass as part of the Northern Sydney Freight Corridor works.