planFive interchanges on the outer ring

ทางแยกต่างระดับห้าแห่งบนวงแหวนรอบนอก

3,145 million baht, five junctions, all due 2027.

agency Department of Highways

What it is

Tendered as a set: Samoeng at Route 108 in Hang Dong, 920 million; the Superhighway at Route 11, 700 million; Louis at Route 1006, 650 million, a four-lane bridge on a 1,080-day contract 2025–27; Kong Sai at Route 106 in Saraphi, 445 million; San Klang at Route 1317, phase two, 430 million. Two more, San Khayom at Route 1367 and Likhit Chiwan at Route 1001, were presented in November 2025 as an overpass on the ring with a tunnel on the cross road and a roundabout, no signals, possible construction 2026.

Connected to

• Ring 3, Route 121 The ring.
• San Klang interchange The one half built.

Named here by

• Ring 3, Route 121 The five.
• San Klang interchange One of five.
• Route 108, southwest to Mae Hong Son The Samoeng interchange is on it.
• Route 1317, the new San Kamphaeng road San Klang.
• 2010s–2020s — going under, and going up 2027.
• What the map says is being built What the department says.

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