Sukhumvit Road
Sukhumvit Road, or Highway 3, is a major road in Thailand, and a major surface road of Bangkok and other cities. It follows a coastal route from Bangkok to Khlong Yai District, Trat border to Koh Kong, Cambodia
Sukhumvit Road is named after the fifth chief of the Department of Highways, Phra Bisal Sukhumvit. It is one of the four major highways of Thailand, along with Phahonyothin Road, Mittraphap Road and Phetkasem Road.
Route
Bangkok and other parts
In the capital, Sukhumvit Road serves as a main commercial street, and this section is often congested, even at late evening or early morning hours. The Chalerm Mahanakhon Expressway has an exit at Soi 1. Ratchadaphisek Road crosses Sukhumvit at the Asok intersection.The Sukhumvit area of Bangkok is easily accessible on the Skytrain Sukhumvit Line, which runs from Mo Chit through the Silom Line interchange at Siam Square up to Bearing on Soi 107. The MRT's Sukhumvit Station interchanges with the Skytrain at Asok.
The Sois are numbered from West to East, with odd numbers branching off North-East of Sukhumvit, and even numbers branching off South-West.
The area between Sukhumvit Soi 1 and Sukhumvit Soi 63 is popular as residential area for western expatriates. Japanese nationals tend to prefer from Soi 21 Asok intersection upwards, especially Soi Thong Lo. Rentals tend to be higher in the even numbered streets between Soi 8 and Soi 28 and in the odd numbered streets between Soi 15 and Soi 39. Soi 12 is occupied mainly by Indian expatriates, see Phahurat. The beginning of Soi 12 also has a Koreatown with several Korean restaurants and grocery stores. Koreatown is across the road from the Korean Cultural Centre.
The areas of Soi Cowboy and Nana Entertainment Plaza are packed full of gogo bars and other places of prostitution. Restaurants of various levels of luxury exist all along the road, as well as hotels including famous names such as The Westin, JW Marriott, Sheraton, Ramada Hotel and Suites Bangkok Sukhumvit, and Four Points by Sheraton. Also several shopping malls are found, like the upscale The Emporium shopping center. It also harbours the eastern bus station at Soi 63 Ekkamai.
Major sois off Sukhumvit Road in Bangkok and other parts:
| Soi number | Soi name | Remarks |
| 3 | Nana Nuea | Opposite to Soi 4 Nana Tai |
| 21 | Asok | Part of the Ratchadaphisek inner ring road |
| 22 | Sai Nam Thip | |
| 23 | Prasan Mit | Srinakharinwirot University campus at the end of the soi |
| 24 | Starts at The Emporium shopping center and Phrom Phong Skytrain station | |
| 36 | Soi Napha Sap | Part of Sukhumvit Road networks of sub-sois & shortcut systems; provides easy access to RAMA IV by connecting with Soi San Sabai after Soi Napha Sap 5, Landmarks: Baan Sukhumvit, SakulThai Magazine |
| 39 | Phrom Phong | |
| 50 | Exit from and access to Chalong Rat Expressway towards Kanchanaphisek Eastern Outer Ring Road via Rama IX and Raminthra Roads | |
| 55 | Thong Lo | Booming up-market residential and commercial strip; location of Pridi Banomyong Institute |
| 62 | Exit from and access to Chaloem Mahanakhon Expressway towards Din Daeng or Dao Khanong via Tha Ruea | |
| 63 | Ekkamai | Opposite to Bangkok Eastern Bus Terminal and Science Centre for Education and Bangkok Planetarium |
| 71 | Pridi Phanomyong | Named after Statesman Pridi Banomyong, who ordered the road to be built |
| 77 | On Nut | Major road linking the city with its eastern suburb of Suan Luang, Prawet, Lat Krabang and Suvarnabhumi Airport |
| 101 | Punna Withi | |
| 101/1 | Wachiratham Sathit | |
| 103 | Udom Suk | |
| 105 | La Salle | |
| 107 | Bearing | |
| 113 | Wat Dan Samrong | |
| 167 | Wat Chacheongsao |