No longer assigned (decommissioned).

Just across the river from Pocomoke City, MD 580 is only mentioned in the 1937 SRC operating budget.

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No longer assigned (decommissioned 1956).

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No longer assigned (decommissioned).

May have lasted into the 1970s.

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No longer assigned (decommissioned).

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Unmarked.

A short loop into St. Mary's City, Maryland's first capital.

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No longer assigned (decommissioned).

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Marked east-west.

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Marked north-south.

MD 587, Wilson Point Road, nortbound, at Dogwood Drive. (photo 10/31/98)

Once ran the entire 2.2 miles to a dead end at the tip of Wilson Point; its southern end was rolled back to Dogwood Dr in 1986. It's unusual in that being a dead end, it's mostly divided. It also serves as the main entrance to Martin State Airport. It is also, for your intrepid reporter, the road home.

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Marked north-south.

Don't know why this one is still around, but it's been this way since at least 1935. I recall a time in the mid 1980s when 588 may not have been signposted. Passes over I-95 with no access. The route should be dropped or switched over to the parallel (just the other side of I-695) six-lane Rossville Blvd. instead of its current two-lane routing.

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Marked north-south.

The namesake race track is Ocean Downs. Not the only Race Track Road to have been a state route; another in Bowie was once MD 703.

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No longer assigned (decommissioned).

This winding road was part of US 1 before it was replaced by a new bridge and straighter approach in 1934. The old bridge appears abandoned, but it is open, and seems to be a popular parking spot.

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Marked north-south on east section, east-west on west section.

Another piece of an old US 1 bridge, bypassed in 1933. This bridge over Octoraro Creek was closed, but still visible from either end in 1999. By 2003 the bridge had been dismantled. Steel grating had been welded over both entrances to prevent people from walking on the rotting wood planks that make up its surface. Colora Rd is the western section (591A) and Porters Bridge Rd is the eastern (591B).

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No longer assigned (decommissioned).

An early bypass of Rising Sun for US 1, itself bypassed further north and west.

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Decommissioned 1958, number no longer assigned. (SHA Min. 08-14-1958, effective same)

Email from Mark Stein:
MD 593 was Brunett Ave. from University Blvd. (MD 193) south to Sligo Creek Pkwy, and then east to US 29. MD 597 appears to have been one of the cross streets between 593 and 29, but I can't tell from the old map, because it didn't list street names. When the beltway was built, these highways were decommissioned and/or removed entirely. Note that Brunett Ave. is the only road that continues under the beltway, while the parallel streets stop and continue on the other side.

Brunett Ave. as MD 593, from a 1956 General Drafting map.

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MD 594 makes a comeback due to construction of the Purple Line subway between Silver Spring and New Carrollton. Sections A-D involve roads on or near the new rail line in Montgomery County, while E-F were in Prince George's County. SHA District 3 (which includes PG County) requested a renumbering for their sections to MD 431 and MD 433.

Sections of MD 594: All of these are along the route of the Purple Line subway
MD 594A: Wayne Avenue 1.40 mi; from Georgia Avenue (US 29) east to Flower Avenue (former MD 787)
MD 594B: Bonifant Street 0.13 mi; from Georgia Avenue (US 29) west to Ramsey Avenue
MD 594C: Bonifant Street 0.16 mi; from Georgia Avenue (US 29) east to Fenton Street
MD 594D: Arliss Street 0.27 mi; from Flower Avenue (former MD 787) southeast to Piney Branch Road (MD 320)
MD 594E: Campus Drive, River Road 2.06 mi; from US 1 southeast to MD 201. Redesignated as MD 431 in 2019.
MD 594F: Elm Road, 85th Avenue 1.24 mi; from Veterans Parkway (MD 410) east to Annapolis Road (MD 450). Looping north of the New Carrollton Metro station. Redesignated as MD 433 in 2019.

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Decommissioned 1958, number no longer assigned. (SHA Min. 08-14-1958, effective same)

MD 594 and 595, from a 1956 General Drafting map.

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Unmarked as an Interstate, signed as US 50 or 50-301.

I-595 has its own page in the Interstate section. Also check out the pages for US 50 and US 301.

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Decommissioned 1958, number no longer assigned. (SHA Min. 08-14-1958, effective same)

Dropped at the same time as 593 and 594. Two blocks of Bonifant are now (at least temporaily) MD 594B and 594C.

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Decommissioned 1958, number no longer assigned. (SHA Min. 08-14-1958, effective same)

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No longer assigned (decommissioned).

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No longer assigned (decommissioned), entire route now part of MD 192.

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No longer assigned (decommissioned).

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MD 598, from the 1948 SRC map.

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No longer assigned (decommissioned 1975), transferred to Baltimore County maintenance.

MD 599 was the remnant of a railroad crossing elimination for MD 493, later to be overlaid by MD 700 (Martin Blvd). Routes 600 and 601 are also in this same area, so be sure to check the next page for those.

Sections of MD 599: All of these in the same general area of Middle River
MD 599: Baker Ave 0.13 mi; from MD 601 (Harrison Blvd) to MD 700 (Martin Blvd). South of Amtrak Northeast Corridor tracks.
MD 599A: Middle River Rd 0.02 mi; from MD 493 (Orems Rd) to MD 599B (Old Orems Rd). Short piece next to Coffman's Snack Bar, which was once surrounded by state routes on three sides.
MD 599B: Old Orems Rd 0.16 mi; MD 601 to MD 599. North of the tracks.

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