U.S. Route 340 in Maryland

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U.S. Route 340

Jefferson National Pike

Length:

16.99 mi [1] (27.34 km)

Formed:

1926

West end:

US 340 at VA state line near Weverton

Major
junctions:

MD 67 near Weverton

MD 180 near Knoxville

MD 17 near Knoxville

US 15 near Jefferson

I-70 in Frederick

East end:

US 40 in Frederick

Highways in Maryland
< MD 337		MD 341 >
State highways - Minor - Former - Turnpikes

U.S. Route 340 in Maryland parallels the route of the old Jefferson Pike from Weverton to Frederick, meeting US 15 near the town of Jefferson.

The route is known as the Jefferson National Pike.

1 Counties traversed
2 Route description
3 Junction list
4 History
5 See also
6 External links

[edit] Counties traversed

[edit] Route description

The route enters Maryland over the Potomac River, downstream from Harpers Ferry, West Virginia. After intersecting a local road the route immediately widens into a four-lane divided highway. It curves to the east and intersects the southern terminus of MD 67 1.6 miles from the river. Continuing east the route intersects the western terminus of MD 180 and upgrades into a high-speed four-lane freeway.

US 340 serves as a major east-west route through southern Frederick County, intersecting MD 17 north of Brunswick, and MD 180 for the second time near Slabtown. Now running due east the route serves as a bypass of Jefferson, before merging with US 15 a few miles east of the town.

Both routes now turn north and continue towards Frederick, intersecting Interstate 70 outside the city. US 340 (and the freeway) terminates at US 40 in downtown Frederick, joining with the parent highway via a partial cloverleaf interchange within the Frederick Triangle [2], while US 15 merges with US 40 and runs north along the Frederick Bypass. The physical roadway continues north as an at-grade city street, S. Jefferson St.

[edit] Junction list

County	Location	Mile	#	Destinations	Notes
continues from Virginia over the Potomac River
Washington	Weverton	0.43		Sandy Hook Rd. east	eastbound exit only
	Weverton	0.74		Keep Tryst Rd. east - to Sandy Hook Rd. west	at-grade intersection
		1.6		Maryland Route 67 north / Rohrersville Rd. - Rohrersville	grade-separated interchange between two routes
		1.8		Keep Tryst Rd. west	direct turnoff from eastbound carriageway
Frederick	Knoxville	2.5		Maryland Route 180 east / Jefferson Pike - Knoxville	upgrades into full grade-separated freeway
		4.4	2	Maryland Route 17 / Burkittsville Rd. - Burkittsville, Brunswick
		7.8	4	Maryland Route 180 / Jefferson Pike - Slabtown, Brunswick, Jefferson
	Jefferson	10.6	8	Lander Rd. - to MD 464
		12.3		US 15 south / Catoctin Mountain Hwy. - Point of Rocks (to MD 28)	leaves westbound and joins eastbound
	joins (mileposts switch to series)
		8.8		Mt. Zion Rd. - Feagaville	signed reversing point for south / west
	Frederick	11.3	10	Interstate 70 / Dwight D. Eisenhower Highway - Hagerstown, Baltimore, Washington D.C.
		11.5	11	Maryland Route 180 west / Jefferson Pike / Maryland Route 351 east / Ballenger Creek Pike - Adamstown	and mutually terminate within interchange
		11.9	12	US 40 / Frederick Freeway - Boonsboro, Washington D.C. (via I-270)	joins
terminates at ; road continues as S. Jefferson St. to

[edit] History

US 340 once followed Jefferson Pike, now part of MD 180, to Frederick, before being switched to its existing alignment in 1970. The route once ran north of its existing terminus via S. Jefferson St. to terminate at US 40 Patrick St., now part of MD 144.