New Hampshire Routes 1-25

Number	Dir.	South or West End	North or East End	Length	Comments
	N/S	US 1 Mass. S/L Seabrook	US 1 Memorial Bridge Maine S/L Portsmouth	16.877
	N/S	US 1 Portsmouth	US 1 Bypass ME-NH Interstate Bridge Maine S/L Portsmouth	2.733
	N/S	MA 1A Mass. S/L Seabrook	US 1 Portsmouth	18.323	Runs along the Atlantic Coast
	N/S	1A Portsmouth	US 1 Portsmouth	4.887	Island-hopping loop into New Castle
	E/W	US 2 Vermont S/L Lancaster	US 2 Maine S/L Shelburne	35.434
	N/S	US 3 Mass. S/L Nashua	Québec 257 Québec Canada Border Pittsburg	241.488
	N/S	US 3 & NH 11 Belmont	US 3 Laconia	4.204	Former route of US 3 through Laconia. Not signed as such, but as part of NH 11A and NH 107.
	N/S	MA 3A Mass. S/L Hudson	US 3 Concord	39.404	Sect. 1
	N/S	US 3 Franklin	US 3 Plymouth	30.934	Sect. 2
Former	N/S	9 Concord	US 3 Ashland	~40.081	Now NH 132
	E/W	US 4 Vermont S/L West Lebanon	I-95 exit 6/US 1 Portsmouth	106.834
	N/S	108 Dover	ME 4 Maine S/L Somersworth	3.784	Continuation of ME 4 Duplicate number of US 4 Close enough to it that there's likely some confusion
	N/S	US 4 Mascoma Lebanon	NH 11 West Andover Andover	23.974
	E/W	VT 9 Vermont S/L Chesterfield	ME 9 Maine S/L Somersworth	109.996	Former NE 9
	E/W	9 Chesterfield	9 Chesterfield	2.317	Spofford Loop
	N/S	MA 10 Mass. S/L Winchester	3/US 302 Twin Mountain Carroll	122.25	Former NE 10
	E/W	VT 10A Vermont S/L Hanover	10 Hanover	0.54	West Wheelock St.
	E/W	VT 11 Vermont S/L Charlestown	ME 11 Maine S/L East Rochester	104.141	Lakes Region Highway
	E/W	US 3 Belmont	11 West Alton Alton	12.98
	N/S	US 3 Weirs Beach Laconia	11A Gilford	5.187
	N/S	11 Lakeport Gilford	11B Gilford	1.728
	N/S	11 Alton	11 Alton	3.29
	N/S	MA 12 Mass. S/L Fitzwilliam	VT 12 Vermont S/L Claremont	62.635
	N/S	9/12/101 Keene	12 South Charlestown Charlestown	21.562
	N/S	12 North Charlestown Charlestown	I-89 exit 20 Lebanon	26.888
	N/S	MA 13 Mass. S/L Brookline	Pleasant St. Concord	43.384
	N/S	US 1 Bypass Portsmouth Circle Portsmouth	ME 16 Maine S/L Wentworths Location	149.748	Several years ago, NH 16 was moved onto the Spaulding Turnpike so the entire length of the turnpike is now NH 16. Routes 125 and 108 were extended to take over the old Route 16 which parallels the Spaulding Turnpike.
	N/S	16 Intervale Bartlett	16 Bartlett	2.488	A.K.A. US 302 Business
	N/S	16 Jackson	16 Jackson	1.029	Jackson Village Business Loop, to resort/tourist area, covered bridge
Former	N/S	16 (now 108) Dover	16 (now 108) Somersworth		L-Shaped route, route was shared with 9 and 236
	N/S	16A Jackson	16A Jackson	5.379	Road is practically a closed loop, its ends are 500' apart, even though its length is over 5 miles.
Former	N/S	16 (now 108) Dover	16 (now 125) Rochester		Old Dover Rd.
	N/S	16 (now 125) Laskey Corner Milton	16 Wakefield		Old White Mtn Rd.
	N/S	16 Center Ossipee Ossipee	16/25 Center Ossipee Ossipee	2.515	Old route of NH 16. Road still called "Route 16B" on street blade sign.
	N/S	US 3 Franconia	VT 18 Vermont S/L Littleton	20.126
	E/W	VT 25 Vermont S/L Piermont	ME 25 Maine S/L Freedom	96.617
	E/W	VT 25A Vermont S/L Orford	25 Wentworth	15.932
	E/W	US 3 & NH 25 Center Harbor	25 Center Harbor	3.247
	E/W	10 Piermont	25 Warren	13.217