Editing Interstate 370 (section)

{{short description|Highway in Maryland}}
{{good article}}
{{Use mdy dates|date=April 2022}}
{{Use American English|date=April 2022}}
{{about|a current Maryland Interstate numbered 370|the proposed interstate with the same number in Missouri|Missouri Route 370}}
{{Infobox road
| route = 370
| state = MD
| type = I
| map = {{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-height=290|frame-lat=39.126|frame-long=-77.186|zoom=13|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 370}}}}
| map_custom = yes
| map_notes = I-370 highlighted in red
| length_mi = 2.54
| length_round = 2
| length_ref = <ref name=MarylandHLR>{{Maryland HLR|year=2015|county1=Montgomery|access-date=August 10, 2016}}</ref>
| established = 1988
| direction_a = West
| terminus_a = {{Jct|state=MD|I|270|road|Sam Eig Highway}} in [[Gaithersburg, Maryland|Gaithersburg]]
| junction = {{plainlist|
*{{Jct|state=MD|MD|355}} in Gaithersburg
}}
| direction_b = East
| terminus_b = {{plainlist|*{{Jct|state=MD|MD|200}} in [[Derwood, Maryland|Derwood]]}}
| counties = [[Montgomery County, Maryland|Montgomery]]
| previous_type = MD
| previous_route = 368
| next_type = MD
| next_route = 370
| spur_type = I
| spur_of = 70
}}

'''Interstate&nbsp;370''' ('''I-370''') is a {{convert|2.54|mi|km|adj=on}} [[Interstate Highway]] spur route off [[Interstate 270 (Maryland)|I-270]] in [[Gaithersburg, Maryland|Gaithersburg]], [[Maryland]], to the western end of the [[Maryland Route 200]] (MD&nbsp;200, Intercounty Connector) toll road at an interchange that provides access to the [[park and ride]] lot at the [[Shady Grove station]] on the [[Red Line (Washington Metro)|Red Line]] of the [[Washington Metro]]. Despite the number, I-370 does not connect to [[Interstate 70 in Maryland|I-70]] itself. The road continues to the west of I-270 as Sam Eig Highway, a surface road. Along the way, I-370 has interchanges with [[Maryland Route 355|MD&nbsp;355]] and Shady Grove Road. The freeway was completed in the late 1980s to connect I-270 to the Shady Grove station. I-370 was always part of the planned Intercounty Connector but was the only segment to be built at the time. The opening of MD&nbsp;200 east of I-370 resulted in the truncation of I-370 to the interchange with [[Maryland Route 200|MD&nbsp;200]] and the redesignation of the road leading into the Shady Grove station as MD&nbsp;200A.