The state highways are arterial routes of a state, linking district headquarters and important towns within the state and connecting them with national highways or Highways of the neighboring states.
Sikkim state has a good road network. There are 8national highways with total length of 512 km and many state highways with total length of 3,668.78 km.[1][2]
| Sl. No. | Type of Road | Length (in km) |
|---|---|---|
| 1 | National highways | 512 |
| 2 | State highways | 732.61 |
| 3 | Major district roads | 1,126.31 |
| 4 | Other district roads | 549.68 |
| 5 | Village roads | 748.18 |
| Total | 3668.78 |
| Number | Length (km) | Length (mi) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 SH 1 | — | — | Gangtok - Ranipool Road To Rumtek -Sang - Sirwani | — | — | |||
| SH 2 | — | — | Gangtok-Rongek-Bhusuk-Assam-Pakyong | — | — | |||
| SH 3 | — | — | Rongli - Rorathang | — | — | |||
| SH 4 | — | — | Pakyong - Machong - Rolep - Chujachen - Rongu | — | — | |||
| SH 5 | — | — | Rumtek - Rey - Ranka - Sichey | — | — | |||
| SH 6 | — | — | Singtam - Chewribotey - Duga - Rangpo | — | — | |||
| SH 6A | — | — | Duga - Pacheykhani | — | — | |||
| SH 7 | — | — | Penlong Tintek Raley - Kambal - Samdong | — | — | |||
| SH 11 | — | — | Namchi - Prong 4Amthang - Mamring | — | — | |||
| SH 12 | — | — | Phongla - Bermiock - Sirwani | — | — | |||
| SH 13 | — | — | Melli Turuk-Sadam- Bhanjyang | — | — | |||
| SH 14 | — | — | Pabong - S | — | — | |||
| SH 15 | — | — | Manpur - Jorethang | — | — | |||
| SH 16 | — | — | Nayabazar (Jorethang) - Namchi (510) | — | — | |||
| SH 17 | — | — | Damthang -(Nh -710) - Rabongla (510) | — | — | |||
| SH 18 | — | — | Ravangla -Yangyang | — | — | |||
| SH 19 | — | — | Namchi - Wok- Sikkip | — | — | |||
| SH 20 | — | — | Gyalshing - Pelling - Dentam - Kaluk- Soreng | — | — | |||
| SH 21 | — | — | Soreng - Sombarey Via Timberbung | — | — | |||
| SH 22 | — | — | Legship (Nh 510) - Reshi - Nayabazar | — | — | |||
| SH 23 | — | — | Kaluk - Reshi Rinchenpong Road - Nayabazar Legship | — | — | |||
| SH 24 | — | — | Nayabazar - Budang - Soreng Via Chakung | — | — | |||
| SH 25 | — | — | Budang-Daramdin - Phambong- Somaberey | — | — | |||
| SH 26 | — | — | Budang -Soreng Via Malabassey | — | — | |||
| SH 27 | — | — | Pelling - Rimbi -Yoksum Phatak - Tashiding Gumpa Phatak- Legship (Gangtok More) | — | — | |||
