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Maryland Route 198 (MD 198) is a state highway in the U.S. state of Maryland. The highway runs from MD 650 near Spencerville east to the entrance of Fort George G. Meade beyond its junction with MD 32. MD 198 connects Laurel in far northern Prince George's County with the northeastern Montgomery County communities of Spencerville and Burtonsville and Maryland City and Fort Meade in western Anne Arundel County. The highway is a four-to-six-lane divided highway between U.S. Route 29 (US 29) in Burtonsville and the Baltimore–Washington Parkway in Maryland City. MD 198 was constructed from US 1 in Laurel west toward Burtonsville in the early 1920s and completed in the late 1920s. Another section was built in Spencerville in the late 1920s; the two segments were connected in the mid-1950s. The Laurel–Fort Meade road was built as MD 602 for military access purposes in the mid-1940s, replacing the original highway between the two locations, MD 216. MD 198 was relocated through Laurel and extended east along MD 602 to Fort Meade in the early 1960s. The first divided highway portion of the highway was part of a relocation at the Interstate 95 (I-95) interchange in the early 1970s. The divided highway was extended west to Burtonsville in the mid-1980s and through Maryland City in the late 1980s. MD 198's eastern end was extended to MD 32 in the early 1990s and then moved again for its interchange with that highway in the early 2000s. The Maryland State Highway Administration (MDSHA) plans to expand the remaining two-lane portions of MD 198 to a divided highway. ==Route description== MD 198 begins at a four-legged intersection with MD 650 (New Hampshire Avenue) west of Spencerville. The west leg of the intersection is county-maintained Norbeck Road, which leads west to MD 28. MD 198 heads east as two-lane Spencerville Road through an intersection with Good Hope Road and passes through the village of Spencerville. At the western edge of Burtonsville, the highway expands to a four-lane undivided highway and has a three-way intersection with Old Columbia Pike and takes on that name. MD 198 expands to a six-lane divided highway just west of its three-quarter diamond interchange with US 29 (Columbia Pike). Access from southbound US 29 to MD 198 is provided via Columbia Pike, a bypassed segment of US 29 that intersects MD 198 opposite the ramp from MD 198 to southbound US 29.〔〔 MD 198 continues east as Sandy Spring Road, which drops to four lanes as the road leaves Burtonsville. The route crosses the Montgomery–Prince George's county line and temporarily expands to six lanes between the intersection with Old Gunpowder Road and Bond Mill Road and the state highway's junction with I-95 in West Laurel. The junction is a cloverleaf interchange with a flyover ramp from westbound MD 198 to southbound I-95. MD 198 again becomes six lanes at the east end of the interchange where the highway enters the city of Laurel. At Ninth Street, the state highway splits into a one-way pair that uses Gorman Avenue eastbound and Talbott Avenue westbound. MD 198 meets the southern end of MD 216 (Seventh Street) and intersects US 1, which comprises a one-way pair that uses Washington Boulevard southbound and Second Street northbound. East of US 1, Gorman and Talbott Avenues come together to form Fort Meade Road, a six-lane divided highway that crosses CSX's Capital Subdivision, which carries MARC's Camden Line.〔〔 MD 198 curves northeast and meets the northern end of MD 197 (Laurel Bowie Road) before crossing the Patuxent River, where the route leaves the city of Laurel and enters Anne Arundel County. The highway, now named Laurel Fort Meade Road, passes one of the main entrances to Laurel Park Racecourse and passes through Maryland City. MD 198 drops to four lanes at its partial cloverleaf interchange with the Baltimore–Washington Parkway (unsigned MD 295) and then becomes a two-lane road a short distance east of the interchange. The state highway crosses the Little Patuxent River, then curves southeast and expands to a four-lane divided highway as it parallels MD 32 (Patuxent Freeway). At the entrance to Tipton Airport, MD 198 curves north and meets MD 32 at a dumbbell interchange. The highway passes through an S-curve then reaches its northern terminus at an entrance to Fort Meade. The road continues into the military installation as Mapes Road.〔〔 MD 198 is a part of the National Highway System for its entire length. The highway is an intermodal connector between I-95 and US 1. The remainder of the highway is a National Highway System principal arterial.〔〔 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「Maryland Route 198」の詳細全文を読む スポンサード リンク
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