No longer assigned (decommissioned 1998).

Sections of MD 840:

MD 840A: (no name) 0.26 mi.; from MD 33 east to road end.
MD 840B: (no name) 0.10 mi.; from Macks La. east to road end. Near MD 33-451 junction.
MD 840C: (no name) 0.43 mi.; loop east of MD 33 near Tilghman.

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No longer assigned (decommissioned 1998).

The former MD 841 is a driveway-like gravel road extending south off MD 579. There are gates at the end where the road splits into private driveways.

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Not assigned.

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Unmarked, associated with MD 63.

Sections of MD 843:

MD 843B: Celeste Dr. 0.12 mi.; from unnamed road and end of state maintenance. Parallels MD 63 north of Williamsport.
MD 843D: (no name) 0.16 mi.; from MD 63 north to road end. Part of pre- I-81 alignment south of Williamsport at MD 68 junction.
MD 843F: (no name) 0.06 mi.; from MD 63 north to road end. West of MD 63 just north of I-70.
MD 843I: (no name) 0.04 mi.; from MD 63 east to Huyett La. Just north of US 40.

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Unmarked, associated with MD 64.

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Unmarked, officially 845A, associated with MD 34.

Part of the old 34 before being routed around Keedysville.

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Unmarked.

Sections of MD 846: South of MD 418 just east of MD 64 in Ringgold.

MD 846B: (no name) 0.10 mi.; Two dead ends, with access to MD 418 via 846D.
MD 846D: (no name) 0.16 mi.; between MD 418 and 846B.

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Unmarked, officially 847D.

Parallels east side of MD 64 between Ringgold and Smithsburg.

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Not assigned.

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Unmarked.

MD 849 is a small part of what was MD 87 extending southward from 482.

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Unmarked, associated with MD 26.

MD 850 is assigned to the many old alignments of MD 26, mostly across Carroll County. Not all such sections remain under state maintenance, such as a small piece of old alignment just across Liberty Reservoir on the Baltimore County side.

Sections of MD 850: 850 G, I, and J are north of 26, all others south.
MD 850C: (no name) (CR) 0.77 mi.; Two dead ends, with access to MD 26 via Franklinville Rd.
MD 850D: (no name) (FR-CR) 0.40 mi.; Two dead ends, with access to MD 26 via Buffalo Rd., which forms the county line.
MD 850E: (no name) (CR) 0.78 mi.; from MD 26 west to road end.
MD 850F: Emerald La. (CR) 0.63 mi.; from MD 26 east to road end.
MD 850G: (no name) (CR) 0.96 mi.; Two dead ends, with access to MD 26 via Linton Rd.
MD 850H: Old Liberty Rd. (CR) 1.77 mi.; loop south of MD 26, intersects MD 97 in the middle.
MD 850I: (no name) (CR) 0.09 mi.; Two dead ends, with access to MD 26 via 26A.
MD 850J: (no name) (CR) 1.24 mi.; Two dead ends, with access to MD 26 via Salem Bottom Rd.
MD 850K: N. Market St. (FR) 0.37 mi.; from MD 355 east to MD 26.

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Unmarked, associated with MD 32.

Sections of MD 851: Except for the main 851, the suffixed sections run north to south down MD 32. MD 851, 851A, B, C are west of 32, others east.
MD 851: Main St. (CR-HO) 2.88 mi.; loop west of MD 32 through Sykesville.
MD 851A: (no name) (CR) 0.05 mi.; from MD 32 north to road end.
MD 851B: (no name) (CR) 0.04 mi.; two dead ends, with access to MD 32 via Church St.
MD 851C: (no name) (CR) 0.13 mi.; from Third Ave. south to road end.
MD 851D: (no name) (HO) 0.96 mi.; two dead ends, with access to MD 32 via unnamed road. Between MD 99 and I-70.
MD 851F: Deer Hill Rd. (HO) 0.15 mi.; from MD 32 west to road end.
MD 851H: (no name) (HO) 0.21 mi.; from MD 32 south to road end.
MD 851J: (no name) (CR) 0.28 mi.; two dead ends, with access to MD 32 via MD 99.

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One section marked, the rest unmarked, associated with the old extent of MD 31, which included current 27 northeast of Westminster.

MD 852 marker (photo 07-18-09).

Sections of MD 852:
MD 852: Old New Windsor Pike 3.72 mi.; loop north of MD 31. Long section of old 31.
MD 852A: (no name) 0.07 mi.; from MD 27 south to road end.
MD 852B: (no name) 0.04 mi.; two dead ends, with access via MD 27A.
MD 852C: Manchester Rd. 0.13 mi.; from MD 27 north to road end. This section is marked with "TO 852 signs on 27 and 852 markers (no cardinal directions) at the ends.
MD 852D: Westminster St. 0.49 mi.; from MD 27 east to MD 30.
MD 852F: (no name) 0.20 mi.; two dead ends, with access via MD 27A (Random Ridge Rd.).
MD 852G: Old Manchester Rd. 2.70 mi.; loop south of MD 27 to northeast of Westminster.
MD 852H: Cranberry Rd. N. 0.24 mi.; from Old Manchester Rd. (852G) west to road end.
MD 852I: (no name) 0.09 mi.; from Hahn Rd. east to road end.
MD 852J: Martin Dr. 0.46 mi.; MD 27 north to road end.
MD 852K: New Windsor Rd. 2.20 mi.; MD 31 east to MD 32. Parallels south side of 31 entering Westminster.
MD 852M: (no name) 0.20 mi.; from MD 852 west to road end.

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Unmarked, parts of old MD 194 (old number 71).

Sections of MD 853: All north of Taneytown.
MD 853A: (no name) 0.12 mi.; two dead ends, witrh access to 194 via 194A. Near PA line.
MD 853C: (no name) 0.08 mi.; south off Stone Rd.
MD 853D: (no name) 0.36 mi.; two dead ends, access to 194 via 194B, 194C.
MD 853E: (no name) 0.75 mi.; south off Brown Rd.

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Unmarked, associated with west side of MD 97, between Routes 26 and 32.

Sections of MD 854:
MD 854A: Old Washington Rd.2.64 mi.; from Bushey Rd. north to road end.
MD 854B: Old Washington Rd.3.93 mi.; from MD 32 south to Muller Rd.

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Unmarked, officially 855A.

MD 855 is what was a sharp curve on old 213.

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Unmarked.

Part of the old MD 298, 856 features the narrow concrete slab common on old routes in Kent County, as seen in the pics below. As can also be seen, it's marginally passable and the asphalt shoulders are overgrown with grass.

MD 856 alongside MD 298, looking south toward MD 561, 1998. Route 561 is a left turn just past the house.

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Not assigned.

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Unmarked, parts of old MD 67.

Sections of MD 858:
MD 858A: (no name) 0.02 mi.; south off Alt US 40 near MD 67 and SHA facility.
MD 858E: Woodstock La.0.48 mi.; from beginning of state maintenance north to road end.
MD 858F: Main St. (Rohrersville) 1.00 mi.; loop west off MD 67.
MD 858G: (no name) 0.07 mi.; parallels west side of 67 south of Rohrersville, access by unnamed, unnumbered road.

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No longer assigned (decommissioned 199x).

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