spaghetti junction
US /spəˈɡet.i ˌdʒʌŋk.ʃən/
UK /spəˈɡet.i ˌdʒʌŋk.ʃən/

1.
a complex and confusing road interchange with many intersecting roads and ramps
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The new highway interchange is a real spaghetti junction.
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I got lost trying to navigate the spaghetti junction downtown.