Ringway 3 (Hanoi)

CT.37 Expressway
Ringway 3 Expressway (Hanoi)
Đường cao tốc Vành đai 3 Hà Nội
Map of the CT.37 expressway with operational (blue) and under construction (pink) sections
Elevated Ringway 3, near Mai Dịch junction, Cầu Giấy, Hanoi.
Route information
Part of AH1 and (Pháp Vân IC - Phù Đổng Bridge)
Maintained by Hanoi Department of Transportation (HNDoT)
Length	65 km (40 mi)
Status	Fully Completed (Thăng Long Bridge - Phù Đổng Bridge)
Existed	20 June 1998 (1998-06-20)–present
Major junctions
West end	Thăng Long Bridge
Major intersections	at Mai Dịch, Cầu Giấy District, Hà Nội near Trung Hòa Interchange, Cầu Giấy, Hà Nội , AH13 near Thanh Xuân Interchange, Thanh Xuân District, Hà Nội , , AH1 at Pháp Vân Interchange, Hoàng Mai District, Hà Nội , AH1 at Cổ Linh Interchange, near Thanh Trì Bridge, Long Biên, Hà Nội , , , AH1, AH14 at Long Biên District, Hà Nội
Location
Country	Vietnam
Provinces	Hanoi
Highway system
Transport in Vietnam
← CT.36 → CT.38

The Ringway 3 of Greater Hanoi area (Vietnamese: Đường Vành đai 3 Hà Nội), signed as CT.37 is a major freeway and urban thoroughfare surrounding the inner part of Hanoi. As the first ringway built in Greater Hanoi area, Ringway 3 connects most of the newly developed area outside the urban core of Hanoi. In addition to that, Ringway 3 is the terminus of most expressway connecting Greater Hanoi to other regions of Vietnam. Due to its importance, Ringway 3 is one of the busiest and most congested highway in Vietnam, carrying from 8 to 10 times its maximum capacity.^[1] To deal with congestion, the Government of Vietnam has proposed building additional ringway to help alleviate traffic on Ringway 3.