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MD 160

Harford
Darlington
MD 160 · was Shuresville Rd.
from MD 161 northeast to US 1.

No longer assigned (decommissioned).

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MD 161

Harford
Darlington
Level
MD 161 · Darlington Rd.
5.38 mi.; from MD 155 near Level north to US 1 near Darlington.

Marked north-south.

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161
5.4 US 1
5.2 MD 623
0.0 MD 155

MD 162

Anne Arundel
BWI Airport
MD 162 · Aviation Blvd.
2.31 mi.; from MD 170 south to MD 176.

Marked north-south.

Forms eastern perimeter of BWI Airport. Was once Hammonds Ferry Road and numbered route 167.

Associated Secret-Obscure Routes: 762

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162
2.3 MD 170
1.8 MD 762
0.4 Hollins Ferry Rd
0.3 I-97 (sb) 15
0.0 MD 176

MD 162

Harford
Castleton
MD 162 · was Smith Rd
northeast off US 1 to road end

No longer assigned (decommissioned).

Connects US 1 to approximate location of old Susquehanna crossing before the Conowingo Dam was built. Later 162 was dropped; MD 623 now traverses the general area.

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MD 163

Harford
Federal Hill
MD 163 · was Fawn Grove Rd
from MD 165 north ~1 mile

No longer assigned (decommissioned).

Former route appears to end before Jerrys Rd.

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MD 164

Cecil
Charlestown
MD 164 · was Carpenters Point Rd.
from MD 267 south to dead end.

No longer assigned (decommissioned).

May have existed as late as 1972.

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MD 165

Harford
Cardiff
Whiteford
Pylesville
Federal Hill
Jarrettsville
Putnam
Upper Crossroads

Baltimore
Baldwin
MD 165 · Baldwin Mill Rd, Federal Hill Rd
20.38 mi.; from old Ma & Pa rail crossing north to PA Line near Delta.

Marked north-south.

Associated Secret-Obscure Routes: 757

The Ma & Pa (Maryland & Pennsylvania Railroad) stopped service around 1955. The only sign the tracks were there is a slight grade and a 'Begin State Maintenance' sign on 165.

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165
20.4 PA 851
20.4 PA Line
19.6 MD 136
17.2 MD 543
16.3 MD 624
15.1 MD 24
  8.2 MD 23*
  6.9 MD 23*
  3.6 MD 152
  1.4 BA-HA Line
  0.8 MD 145
  0.0 Begin

MD 166

Baltimore
Catonsville
Arbutus
MD 166 · S. Rolling Rd.
2.71 mi.; from MD 144 south to I-195.

Marked north-south.

So named because this road was used in colonial times to roll casks of tobacco downhill from Catonsville to waiting ships on the Patapsco River near Elkridge. This route doesn't technically fit into a numbering cluster, being in southwestern Baltimore County, but close to the part of Anne Arundel County where the next cluster begins.

Associated Secret-Obscure Routes: 466

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166
2.7 MD 144
1.7 Bloomsbury Ave
1.5 Valley Rd
1.0 MD 372
0.0 I-195

MD 167

Anne Arundel
Linthicum
MD 167 · was Hammonds Ferry Rd.
from Anne Arundel-Baltimore County line south to MD 176.

No longer assigned (decommissioned), part of route now MD 162, MD 762.

Only reminder of this route is the fact that both 168 and 169 end here. The group of routes 167-179 puts us in northern and central Anne Arundel County. The southern half of this route between MD 170 and MD 176, is now signed as MD 162 and named Aviation Blvd; it forms the eastern perimeter of BWI Airport. The entire route was dropped in 1960; the part of 167 along the airport perimeter was revived in the early 70s, and later changed to 162.

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MD 168

Anne Arundel
Linthicum
MD 168 · Nursery Rd.
1.28 mi.; from Hammonds Ferry Rd. near I-695 Exit 8 east to Md 648.

Marked east-west.

Plenty of fast food and gas near I-695 Exit 8, otherwise not much to speak about.

Associated Secret-Obscure Routes: 969

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168
0.0 Hammonds Ferry Rd
0.2 I-695 8
0.3 MD 969
1.3 MD 648

MD 169

Anne Arundel
Linthicum
MD 169 · Maple Rd.
0.97 mi.; from Hammonds Ferry Rd. east to MD 648.

Marked east-west.

Otherwise an unassuming residential street. I would figure SHA would drop this route should they get around to it.

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169
0.0 Hammonds Ferry Rd
0.3 MD 170
0.7 MD 648

MD 170

Anne Arundel
Brooklyn Park
Pumphrey
Linthicum
BWI Airport
Harmans
Severn
Odenton
MD 170 · Belle Grove Rd., Telegraph Rd., Camp Meade Rd.
12.98 mi.; from MD 2 near Baltimore city line south to MD 175, Odenton

Marked north-south.

South end was at Odenton Rd (former MD 677) before being rolled back to MD 175 in 2004.

Associated Secret-Obscure Routes: 652

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170
13.0 AA-BA Line
13.0 MD 2
10.7 MD 648
10.3 I-695 6
  9.9 MD 169
  9.1 MD 762
  8.7 MD 162
  7.5 I-195 1
  7.1 MD 995
  5.2 MD 176
  4.4 MD 100 11
  3.5 MD 174
  1.0 MD 32
  0.0 MD 175

I-170

Baltimore City
I-170 ·
between Franklin/Mulberry Sts. (US 40)

No longer assigned (decommissioned 1989), now signed as US 40.

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MD 171

Anne Arundel
Glen Burnie

Baltimore City
MD 171 · Church St.
1.54 mi.; from MD 2 east to (Baltimore city line or) MD 173.

Marked east-west in Anne Arundel County, unmarked in Baltimore City.

Should run to Patapsco Ave. (MD 173) in Baltimore City, but again neither 171 nor 173 are signed in the city.

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171
0.0 MD 2
0.9 AA-BA Line
1.5 MD 173

MD 172

Baltimore City

Anne Arundel
Curtis Bay
MD 172 · Arundel Cove Ave.
from MD 173 south to Coast Guard station entrance.

Unmarked.

Once called Colfax Ave. Coast Guard facility is in Anne Arundel County while only road access was across the Baltimore City line to 173. I don't know if it was ever signed.

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MD 173

Baltimore City

Anne Arundel
Foremans Corner
Riviera Beach
MD 173 · Fort Smallwood Rd.
13.73 mi.; from MD 2 southeast to Ft Smallwood Park.

Marked east-west.

Also included Hawkins Pt. Rd. and Patapsco Ave. east of MD 2 in the city, but city signage was neglected long ago. Mileage begins at the southeastern end (Ft. Smallwood).

Associated Secret-Obscure Routes: 642

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173
13.7 MD 2
12.4 Patapsco Ave
11.7 MD 171
10.7 MD 710
10.3 Drawbridge
  9.7 MD 172
  9.2 Quarantine Rd
  8.8 AA-BC Line
  8.1 Marley Neck Rd
  7.6 Solley Rd
  5.9 MD 642
  5.1 Riviera Dr
  5.1 Bar Harbor Rd
  4.1 Duvall Hwy
  3.9 Edwin Raynor Blvd
  3.0 MD 607
  0.0 Ft Smallwood

MD 174

Anne Arundel
Ft. Meade
Severn
Glen Burnie
MD 174 · Reece Rd., Donaldson Ave., Quarterfield Rd.
5.94 mi.; from end of state maintenance at Jacobs Road northeast to Business MD 3.

Marked east-west.

Began as a mere sliver west of Business 3. Donaldson Avenue was realigned at MD 170 in 1983, taking over old MD 554 (Reece Rd.) west of MD 170 all the way to the end of state maintenance at the property line of Fort Meade near Jacobs Road.

MD 174 does not extend all the way down Reece Road to MD 175 and Fort Meade. There is a "Begin State Maintenance" sign at Jacobs Road, and the turnoff for Reece Road off of 175 says "TO MD 174."

A tip of the MDRoads cap to Gary Metzler for this 174 info:
MD 174 took in Quarterfield Rd from Bus 3 in Glen Burnie west to Donaldson Avenue (not road), then ran pretty much along the roadbed of Donaldson Avenue. Donaldson Avenue ended at MD 170 just south of MD 554 (Reece Road) so a new segment was constructed to intersect at the existing MD 554 / MD 170 junction, and MD 554 from MD 170 to MD 175 was incorporated into MD 174.


MD 174's western beginning at Jacobs Rd, Fort Meade (picture 06/06/2010)

MD 174 in Snow, 2010
MD 174 in the aftermath of 2010's Double Blizzard (picture 02/14/2000)

Associated Secret-Obscure Routes: 483 554 779

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174
0.0 BSM
2.5 MD 170
4.9 I-97 13
5.2 MD 779
5.6 MD 100 14
5.9 MD 3 Bus

MD 175

Howard
Columbia
Waterloo
Jessup

Anne Arundel
Ft. Meade
Odenton
Gambrills
Millersville
MD 175 · Rouse Parkway, Waterloo Rd, Jessup Rd, Annapolis Rd
17.01 mi.; from US 29 in Columbia southeast to MD 3 in Millersville.

Marked east-west.

Now an 4-6 lane main drag in Howard County, MD 175 once began at MD 103, running along the current 104 and 108. North of 104 to US 29, it now takes the route of old MD 539. On its southern end, it once ran past 3 to 178 near I-97 Exit 5. In the years around World War II, 175 ran northeast from Fort Meade along what is now MD 713; current 175 south of Ft. Meade was MD 180.

Though MD 175 runs diagonally NW-SE, signage is east-west, to be perpendicular to the NE-SW diagonal corridors it intersects (US 29, I-95, US 1, MD 295, MD 3) that are all signed north-south.

Associated Secret-Obscure Routes: 180 539 677 723

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175
17.0 ESM
16.6 US 29 20
14.9 Tamar Dr
14.0 Dobbin Rd
13.4 Snowden River Pkwy
12.5 MD 108
12.0 I-95 41
11.4 US 1
  9.8 AA-HO Line
  9.7 MD 723
  9.0 Brock Bridge Rd
  8.4 MD 295
  7.3 MD 713
  5.9 Reece Rd
  4.3 MD 32
  3.3 MD 170
  2.3 MD 677
  0.1 MD 3 (sb)
  0.0 MD 3 (nb)

MD 176

Anne Arundel
Harmans
BWI Airport
Glen Burnie
MD 176 · Dorsey Rd.
5.68 mi.; from cul-de-sac near MD 100 southeast to MD 648.

Marked east-west.

MD 176 be truncated at the west end due to construction of new MD 100 in the late 1990s. It used to extend west into Howard County to US 1. During construction of MD 100, 176 was realigned to line up with MD 103 on the other side. After the opening of MD 100, MD 176 was rolled back to near Ridge Rd/Arundel Mills Blvd (MD 713) and MD 100 took over 176's interchange with the B/W Parkway (MD 295). MD 103 took over the old alignment of MD 176 west of the B/W Parkway.

Associated Secret-Obscure Routes: 645

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176
0.0 BSM
0.9 MD 713
2.1 MD 176
2.7 MD 652
4.7 MD 162
5.0 I-97 15
5.7 MD 648

MD 177

Anne Arundel
Harundale
Armiger
Jacobsville
Lake Shore
Gibson Island
MD 177 · Mountain Rd.
10.92 mi.; from MD 2 east to gated entrance to Gibson Island.

Marked east-west.

Begins at MD 2 near Marley Station mall and MD 100, ending at the private gated community of Gibson Island on the Magothy River. Unusually for a surface route, MD 177 has a third, signalized reversible center lane from MD 100 east to South Carolina Ave. Normally this is a center turn lane, but can be made one way to accomodate peak traffic. The eastern end at the Gibson Island gate is marked with "END 177" signage.

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177
  0.0 MD 2
  0.6 MD 10
  0.8 MD 648*
  2.0 MD 648*
  2.0 Solley Rd
  2.9 Catherine Ave
  3.7 Edwin Raynor Blvd
  4.2 MD 607
  5.2 MD 100
  5.3 MD 990
10.9 Gibson Isl Gate

MD 178

Anne Arundel
Dorrs Cor.
Crownsville
Parole
MD 178 · Generals Hwy.
8.06 mi.; from MD 450 north to Old Crain Hwy. (former MD 3)

Marked north-south.

General George Washington traveled this road to Annapolis to formally resign his commission after the Revolution, thus the name.

Associated Secret-Obscure Routes: 798

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178
8.1 Veterans Hwy
5.4 I-97 5
5.1 Herald Harbor Rd
4.2 Crownsville Rd
2.5 MD 798
0.3 Bestgate Rd
0.0 MD 450

MD 179

Anne Arundel
Cape St Claire
MD 179 · St. Margarets Rd.
3.16 mi.; from MD 648 northeast to US 50-301 Exit 29.

Marked east-west.

Once extended east to Skidmore, near Sandy Point, but its former route lies beneath current US 50-301 and its frontages.

Associated Secret-Obscure Routes: 931

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179
0.0 MD 648
2.4 MD 908
2.6 US 50-301 29
2.8 College Pkwy
3.2 ESM