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|direction_b=North |terminus_b= in Brooklyn Park |counties=Anne Arundel County |previous_type=MD |previous_route=96 |next_type=MD |next_route=97 }} Interstate 97 (I-97) is a part of the Interstate Highway System that runs entirely within Maryland. The intrastate Interstate runs from U.S. Route 50 and US 301 in Parole near Annapolis north to I-695 and I-895 in Brooklyn Park near Baltimore. The Interstate is the primary highway between Baltimore and Annapolis. I-97 connects Annapolis with Baltimore–Washington International Airport and links the northern Anne Arundel County communities of Crownsville, Millersville, Severna Park, Glen Burnie, and Ferndale. I-97 was constructed along the corridor of Maryland Route 3 (MD 3) between Millersville and Ferndale and MD 178 between Parole and Millersville. From Millersville to south of Glen Burnie, the Interstate closely follows the former course of MD 3, which was built in the late 1910s and early 1920s and expanded to a divided highway in the late 1950s. North of there, the highway follows the Glen Burnie Bypass, a freeway built in the mid-1950s. The segment of I-97 from Millersville to Crownsville originated as a two-lane portion of MD 32 in the early 1970s. The Interstate was introduced in 1979 after the state of Maryland successfully obtained Interstate mileage for a Baltimore–Annapolis freeway from the federal government. The state decided to build the highway along I-97's current corridor rather than along the MD 2 corridor, which has partial freeway access via MD 10. Construction on I-97 began in the late 1980s with new construction from US 50 and US 301 to Crownsville. The Crownsville–Millersville segment of MD 32 was expanded and incorporated into the Interstate and the MD 3–MD 32 junction was upgraded. The portion of the MD 3 corridor from Millersville to south of Glen Burnie was upgraded on the spot to Interstate Highway standards in the early 1990s, after which MD 3 was truncated at Millersville. I-97's interchange with I-695 was rebuilt in the late 1980s and early 1990s. The Glen Burnie Bypass was upgraded and expanded to six lanes in the mid-1990s. The complex process included reconstruction of several interchanges; the last interchange to be reconstructed was upgraded in the mid-2000s. ==Route description== I-97 begins at US 50 and US 301 (John Hanson Highway), which run concurrently with unsigned I-595, on the edge of the community of Parole west of Annapolis. The freeways meet at a semi-directional T interchange; the ramp from I-97 to eastbound US 50 and US 301 merges with a collector-distributor road that extends east to that freeway's interchange with MD 665 (Aris T. Allen Boulevard). I-97 heads northwest as a four-lane freeway with a speed limit of . The freeway crosses over MD 450 (Defense Highway) and passes along the south and west sides of Crownsville, where it crosses several tributaries of the Bacon Ridge Branch of the South River. North of Crownsville, I-97 has a partial interchange that comprises a pair of long ramps to MD 178 (Generals Highway); the interchange allows access from southbound I-97 to MD 178 and from the state highway to the northbound Interstate. I-97 gains an extra lane in each direction from the MD 178 ramps; those extra lanes split off at the freeway's partial interchange with the eastern end of MD 32 just north of Millersville. The Interstate curves northeast and has a complementary partial interchange with the northern end of MD 3 (Robert Crain Highway). The two state highways meet each other at a six-ramp partial cloverleaf interchange immediately to the west of I-97's sweeping curve, which facilitates all movements between the three highways.〔〔 I-97 continues north as a six-lane freeway and is closely paralleled on the east by Veterans Highway on the western edge of Severna Park. The highways cross Severn Run within Severn Run Natural Environment Area before they diverge slightly at the Interstate's partial cloverleaf interchange with Benfield Boulevard; access from northbound I-97 to the crossroad is via Veterans Highway. I-97 and Veterans Highway continue to parallel each other to the latter highway's northern end at I-97's partial cloverleaf interchange with the southern end of MD 3 Business (Robert Crain Highway) and New Cut Road. The interchange includes a flyover ramp from northbound I-97 to northbound Veterans Highway just south of its intersection with MD 3 Business. The freeway continues north along the west side of Glen Burnie and meets MD 174 (Quarterfield Road) at a four-ramp partial cloverleaf interchange and MD 100 at a cloverstack interchange that has flyover exit ramps from both directions of I-97.〔〔 I-97 temporarily gains two extra lanes in each direction between MD 100 and its partial cloverleaf interchange with MD 176 (Dorsey Road). Access from the southbound Interstate to MD 176 is via MD 162 (Aviation Boulevard), which forms part of the Airport Loop surrounding Baltimore–Washington International Airport. I-97 continues through Ferndale, where it crosses over the Glen Burnie branch of the Baltimore Light Rail immediately before the highway's four-ramp partial cloverleaf interchange with MD 648 (Baltimore–Annapolis Boulevard), which provides access to the transit line's terminal station, Cromwell Station / Glen Burnie. I-97's final interchange is with I-695 (Baltimore Beltway). The Interstate crosses the Cabin Branch of Curtis Creek within the interchange, which includes a flyover ramp from I-97 to westbound I-695; that ramp and the one from eastbound I-695 to I-97 merge on the inside of the two carriageways of the Beltway. The Interstate drops to four lanes and reaches its northern terminus just north of the loop ramp from westbound I-695 to I-97 in Brooklyn Park. The highway continues as I-895A, a pair of ramps that merge with the spur from I-895 (Harbor Tunnel Thruway) to MD 2 (Governor Ritchie Highway). The continuation from I-97 includes a ramp to westbound I-695 that allows access to the Beltway's interchange with MD 648.〔〔 I-97 does not have an official name.〔 However, the Interstate is dedicated to John A. Cade, who served the area around Severna Park in the Maryland Senate from 1974 to his 1996 death and who worked to secure funding for the highway. The Maryland General Assembly passed a dedication bill in 1998, and the Maryland State Highway Administration (MDSHA) installed a pair of signs noting the dedication in Millersville and near Parole.〔 Like all Interstate Highways, I-97 is a part of the National Highway System for its entire length.〔 I-97 is the shortest 2-digit mainline Interstate and only intracounty 2-digit Interstate in the contiguous United States.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Interstate 97」の詳細全文を読む スポンサード リンク
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