Otoyol 31

O-31
O-31
İzmir-Aydın Otoyolu
Route information
	Part of E87
Length	127.8 km (79.4 mi)
Existed	1996–present
Major junctions
North end	O-30 in Buca, İzmir
	D.550 in Menderes; D.550 in Belevi; D.525 in Germencik; D.550 in Aydın;
South end	D.320 in Aydın
Location
Country	Turkey
Regions	Aegean
Provinces	İzmir, Aydın
Major cities	İzmir, Aydın
Highway system
	Highways in Turkey; Motorways List; ; State Highways List; ;

Otoyol 31, named the İzmir-Aydın Motorway (Turkish: İzmir-Aydın Otoyolu) or just the Aydın Motorway and abbreviated as the O-31 is a 127.8 km (79.4 mi) long toll motorway in western Turkey. Beginning at an intersection with İzmir Beltway, the O-31 runs south from İzmir to Aydın and parallels the D550 for most of its route.

Plans to extend the O-31 further to Denizli and Burdur have been finalized and the tender is expected to be awarded on 18 September 2018.^[2]

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