| Udon Ratthaya Expressway ทางพิเศษอุดรรัถยา | |
|---|---|
| Bang Pa-in–Pak Kret Expressway ทางด่วนสายบางปะอิน–ปากเกร็ด | |
| Route information | |
| Maintained by Bangkok Expressway and Metro | |
| Length | 32.0 km (19.9 mi) |
| Existed | 2 December 1998–present |
| Chaeng Watthana–Chiang Rak | |
| Length | 22.0 km (13.7 mi) |
| North end | Chiang Rak Interchange |
| South end |   Si Rat Expressway, Chaeng Watthana Road |
| Chiang Rak–Bang Sai | |
| Length | 10.0 km (6.2 mi) |
| North end |  Outer Ring Road (West) (Kanchanaphisek Road) |
| South end | Chiang Rak Interchange |
| Location | |
| Country | Thailand |
| Highway system | |
The Udon Ratthaya Expressway (Thai: ทางพิเศษอุดรรัถยา), also known as the Bang Pa-in–Pak Kret Expressway (Thai: ทางด่วนสายบางปะอิน–ปากเกร็ด), is an expressway in Thailand, located in Nonthaburi, Pathum Thani and Phra Nakhon Si Ayutthaya provinces. The expressway is a controlled-access toll road.[1]
- ^ "ทางพิเศษอุดรรัถยา". EXAT.