State highways are important linking roads connecting several important cities, towns, and district headquarters within the state. Additionally, these highways connect with the national highways and the state highways of the adjacent states. The state highways are managed and administered by PWD or the Public Works Department of the state.

The state highways in Bihar play a crucial role in the development of our state’s infrastructure.

1. SH69

• Entry and exit point: Starts from Dumaria to end at Rani Talab
• Route: Dumaria –Imamganj – Sherghati – Karmain – Mathurapur – Guraru – Ahiapur – Tekari – Mau – Kurtha – Kinjar – Paliganj – Rani Talab
• Distance: 153 km

2. SH76

• Entry and exit point: Starts from Araria to end at Bhaptiyahi
• Route: Araria – Raniganj – Jadia – Triveniganj – Pipra – Supaul – Vishnupur – Bhaptiyahi
• Distance: 121 km

3. SH78

• Entry and exit point: Starts from Bihta to end at Sarmera
• Route: Bihta – Naubatpur – Neva – Dumari – Beldarichak – Kansari – Daniawan and Chand – Noorsarai – Bhagan Bigaha – Rahui – Bind – Gopalbad - Sarmera
• Distance: 112 km

4. SH77

• Entry and exit point: Starts from Kursela to end at Forbesganj
• Route: Kursela – Pothia – Palka – Meergunj – Sarsi – Kalabalua – Raniganj – Saifganj - Forbesganj
• Distance: 105 km

5. SH6

• Entry and exit point: Starts from Biharsharif to end at Kharagpur Road
• Route: Biharsharif – Barbigha – Shekhpura – Sikandara – Jamui – Kharagpur Road
• Distance: 95 km

6. SH5

• Entry and exit point: Starts from Biharsharif to end at Arwal Road
• Route: Biharsharif – Parwalpur – Ekangarsarai – Telhara Road - Ekangarsarai-Jehanabad-Arwal Road.
• Distance: 89.77 km

7. SH73

• Entry and exit point: Starts from Siwan to end at Shitalpur
• Route: Siwan – Basantpur – Mashrak – Traiya – Amnor – Sonho – Parsa - Shitalpur
• Distance: 88 km

8. SH71

• Entry and exit point: Starts from Jehanabad to end at Parwatipur
• Route: Jehanabad – Ghosi – Islampur – Rajgir – Giryak - Parwatipur
• Distance: 85 km

9. SH74

• Entry and exit point: Starts from Hajipur to end at Areraj
• Route: Hajipur – Vaishali – Deoria – Sahebganj – Kesaria – Khajuriya - Areraj
• Distance: 85 km

10. SH4

• Entry and exit point: Starts from Fatuha and ends at Gaya
• Route: Fatuha – Daniawan – Hilsa – Ekangarsarai – Islampur – Hulasganj – Khizarsarai - Gaya
• Distance: 82.16 km

11. SH68

• Entry and exit point: Starts from Sheoganj and ends at Baidarabad
• Route: Sheoganj – Rafiganj – Goh – Upahara – Deokund - Baidarabad
• Distance: 78 km

12. SH63

• Entry and exit point: Starts from Araria to end at Galgalia Road
• Route: Araria – Galgalia Road
• Distance: 68 km

13. SH16

• Entry and exit point: Starts from Akbarpur and ends at Jardeg Road
• Route: Akbarpur – Pipradih – Yadunathpur – Jardeg Road
• Distance: 67 km

14. SH64

• Entry and exit point: Starts from Bettiah and ends at Bagaha Road
• Route: Bettiah-Bagaha Road
• Distance: 66 km

15. SH18

• Entry and exit point: Starts from Jamui and ends at Chakai Road
• Route: Jamui – Jhajha – Chakai Road
• Distance: 63 km

16. SH65

• Entry and exit point: Starts from Purnia to end at Chandpur
• Route: Purnia – Chunapur – Dhamdaha – Rupauli - Chandpur
• Distance: 63 km

17. SH18

• Entry and exit point: Starts from Sikandara to end at Kharagpur Road
• Route: Sikandara - Jamui – Kharagpur Road
• Distance: 58 km

18. SH22

• Entry and exit point: Starts from Sultanganj to end at Tarapur Road
• Route: Sultanganj – Tarapur Road
• Distance: 58 km

19. SH70

• Entry and exit point: Starts from Gaya to end at Rajauli
• Route: Gaya – Fatehpur – Sirdalla - Rajauli
• Distance: 58 km

20. SH72

• Entry and exit point: Starts from Jamui to end at Bariyarpur
• Route: Jamui – Lakshmipur – Kharagpur - Bariyarpur
• Distance: 58 km