National Highway System
System information
Maintained by Department of Roads
Length	6,255 km (3,887 mi)
Formed	1956
Highway names
National Highway	Hnn
System links
Roads in Nepal

The National Highway System of Nepal is the group of main roads in Nepal. Any highway or road that connects east to west and north to south is considered a National Highway of Nepal.^[1] This system is different from the Feeder Road system and other local road systems of Nepal. However, it contains freeways that cross through the highlands of eastern, central, and western Nepal.

Routes

On current operations, there are 18 active National Highways throughout the country. Three highways are under construction. Freeways are counted as highways too.

National Highway Routes^[2]

Number	Name	Length (km)	Length (mi)	Start	End	Formed	Notes
H01	Mahendra Highway	1,027.67	638.56	Mechinagar	Bhimdatta
H02	Tribhuvan Highway	189.66	117.85
H03	Araniko Highway	112.83	70.11
H04	Prithvi Highway	173.43	107.76
H05	Madan Ashrit Highway	36.16	22.47
H06	B.P. Koirala Highway	205.88	127.93
H07	Mechi Highway	268	167
H08	Koshi Highway	111.46	69.26
H09	Sagarmatha Highway	178.97	111.21
H10	Siddhartha Highway	146.94	91.30
H11	Rapti Highway	168.68	104.81
H12	Ratna Highway	113.08	70.26
H13	Karnali Highway	233	145
H14	Mahakali Highway	415.15	257.96
H15	Seti Highway	65.96	40.99
H16	Kathmandu Ringroad	28	17
H17	Postal Highway	1,792	1,113
H18	Pushpa Lal Highway	1,889	1,174
H19	Bhasi-Bramhadev Highway	13.30	8.26	Bhasi, Kanchanpur	Bramhadev, Kanchanpur
H20	Kathmandu–Terai Expressway	81.80	50.83	Kathmandu	Nijgadh, Bara		Under construction
H21	Kathmandu Outer Ringroad	72.00	44.74				Under construction