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Interstate 70 in Maryland
Interstate 70 (I-70) is a part of the Interstate Highway System that runs from Cove Fort, Utah to Baltimore, Maryland. In Maryland, the Interstate Highway runs from the Pennsylvania state line in Hancock east to the Interstate's eastern terminus near its junction with I-695 at a park and ride in Baltimore. I-70 is the primary east–west Interstate in Maryland; the Interstate Highway connects Baltimore—and Washington via I-270—with Western Maryland. The Interstate serves Frederick and Hagerstown directly and provides access to Cumberland via its junction with I-68 at Hancock. I-70 runs concurrently with its predecessor highway, U.S. Route 40 (US 40), from Hancock to Indian Springs in Washington County and from Frederick to West Friendship in Howard County.
I-70's route from Frederick to West Friendship was constructed as a divided highway relocation of US 40 in the early to mid-1950s and a freeway bypass of Frederick in the late 1950s. The first section of the Interstate to be marked as I-70 was an upgrade of US 40 near Hancock in the early 1960s. The remainder of the Interstate highway in Maryland west of Frederick was built on a new alignment in the mid- to late 1960s. I-70 was constructed from West Friendship to its present terminus in Baltimore in the late 1960s. The highway from Bartonsville in Frederick County to West Friendship was upgraded to Interstate standards in the mid-1970s. The final non-limited access portion of I-70 between Frederick and Bartonsville was eliminated in the mid-1980s. The Interstate has been upgraded through Frederick in a series of projects that began in the late 1990s.
I-70 was intended to enter Baltimore as an east–west freeway that had been proposed since the 1940s. Around 1960, I-70 was planned passing through a pair of parks and several neighborhoods in West Baltimore to end at an interchange with I-95 and I-83 at the Inner Harbor in Downtown Baltimore. A subsequent proposal based on a review of the 1960 plan moved I-70 to a new alignment that triggered community opposition, which resulted in a new design process in the late 1960s. A new plan was introduced around 1970 that would have moved I-70's eastern terminus to Southwest Baltimore. However, community opposition to the Interstate's planned route through the city parks resulted in I-70 being removed from city plans in the early 1980s.
==Route description==
I-70 has several official designations along its course through Maryland. The Interstate Highway is designated Eisenhower Memorial Highway from the Pennsylvania state line east to I-270 in Frederick. The highway received this designation from a 1973 act of Congress commemorating the route of the 1919 U.S. Army convoy from Washington to San Francisco in which President Dwight D. Eisenhower participated, an ordeal that served as one of his inspirations for the Interstate Highway System.〔 All of I-70 in Frederick County was designated the Korean War Veterans Memorial Highway by the Maryland General Assembly in 2002. Large stone markers featuring reliefs of the Korean Peninsula were erected in the median of I-70 in Myersville and Mount Airy in 2004.〔 Along its concurrency with US 40 from I-270 in Frederick to east of West Friendship, I-70 is known as Baltimore National Pike. The Interstate is unnamed from US 40 near West Friendship to its eastern terminus in Baltimore. Like all mainline Interstates, I-70 is a part of the National Highway System for its entire length.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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