User:40bus/Interstate Highways/Interstate 370

Interstate 370
Interstate 370
Route information
	Auxiliary route of I-70
NHS	Entire route
Major junctions
West end	I-81A2 / WV 9 in Charles Town, WV
	MD 17 near Rosemont, MD; US 15 near Jefferson, MD; I-70 in Frederick, MD;
East end	US 15 / US 40 in Frederick, MD
Location
Country	United States
States	West Virginia, Virginia, Maryland
Counties	WV: Jefferson; VA: Loudoun; MD: Washington, Frederick
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future;
	West Virginia State Highway System; Interstate; US; State;
	Virginia Routes; Interstate; US; Primary; Secondary; Byways; History; HOT lanes;
	Maryland highway system; Interstate; US; State; Scenic Byways;

Major intersections

State	County	Location	mi^[1]^[2]^[3]	km	Exit	Destinations	Notes
West Virginia	Jefferson	Charles Town	9.09	14.63	WV 9 west – Martinsburg WV 51 west (East Washington Street) – Charles Town	Northern end of WV 9 concurrency; eastern terminus of WV 51; interchange
		Charles Town	Halltown	12.04	19.38	WV 230 north – Halltown, Shepherdstown	Southern terminus of WV 230
		Bolivar	13.76	22.14		US 340 Alt. east (Washington Street) – Harpers Ferry
					16.03 0.00	25.80 0.00	West Virginia–Virginia state line
Virginia	Loudoun					SR 671 south (Harpers Ferry Road)	Northern terminus of SR 671
Potomac River			0.57 0.00	0.92 0.00	Virginia–Maryland state line
Maryland	Washington	Weverton	1.56	2.51		MD 67 north (Rohrersville Road) – Boonsboro	Trumpet interchange
	Frederick	Knoxville	2.53	4.07	—	MD 180 east (Jefferson Pike) to MD 478 – Knoxville, Brunswick	Eastbound exit and westbound left entrance; western end of freeway
			4.39	7.07	—	MD 17 (Burkittsville Road) – Brunswick, Burkittsville
			7.77	12.50	—	MD 180 (Jefferson Pike) – Petersville
		Jefferson	8.97	14.44		MD 180	Westbound entrance only
		Jefferson	10.57	17.01	—	Lander Road – Jefferson
			12.30	19.79	—	US 15 south (Catoctin Mountain Highway) – Leesburg	Western end of US 15 concurrency; westbound left exit and eastbound entrance
		Frederick	13.92	22.40	—	Mt. Zion Road
			15.58	25.07	9	Jefferson Technology Parkway	Unsigned MD 872G
			16.38	26.36	10	I-70 east (Eisenhower Memorial Highway) to I-270 south – Baltimore, Washington	Eastbound exit and westbound entrance; I-70 exit 52
			16.62	26.75	11	MD 180 west (Jefferson Pike) / Ballenger Creek Pike	No exit number westbound
			17.01	27.37	12	I-70 west (Eisenhower Memorial Highway) / US 15 north / US 40 west (Frederick Freeway) – Hagerstown, Gettysburg	Eastern end of US 15 concurrency; eastern terminus; partial cloverleaf interchange; signed as exits 12A (I-70) and 12B (US 15/US 40); I-70 exit 52A
			17.01	27.37		Jefferson Street	Continuation beyond Frederick Freeway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access

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