U.S. Route 140 was a U.S. highway connecting Gettysburg, Pennsylvania to Baltimore, Maryland. The route was deleted from the system in 1979; today the road's route is followed by portions of Pennsylvania Route 97, Maryland Route 97, and Maryland Route 140.
Interstate 695 (I-695) is a 51.46-mile-long (82.82 km) full beltway Interstate Highway extending around Baltimore, Maryland, United States. I-695 is officially designated the McKeldin Beltway, but is colloquially referred to as either the Baltimore Beltway or 695. The route is an auxiliary route of I-95, intersecting that route southwest of Baltimore near Arbutus and northeast of the city near White Marsh. It also intersects other major roads radiating from the Baltimore area, including I-97 near Glen Burnie, the Baltimore–Washington Parkway near Linthicum, I-70 near Woodlawn, I-795 near Pikesville, and I-83 in the Timonium area. The 19.37-mile (31.17 km) portion of the Baltimore Beltway between I-95 northeast of Baltimore and I-97 south of Baltimore is officially Maryland Route 695 (MD 695), and is not part of the Interstate Highway System, but is signed as I-695. This section of the route includes the Francis Scott Key Bridge that crosses over the Patapsco River. The bridge and its approaches are maintained by the Maryland Transportation Authority (MDTA) while the remainder of the Baltimore Beltway is maintained by the Maryland State Highway Administration (MDSHA).
Interstate 395 (I-395) is an Interstate Highway in the U.S. state of Maryland. Known as Cal Ripken Way, the highway runs 1.33 miles (2.14 km) from I-95 north to Howard Street and Camden Street in Downtown Baltimore, where it provides access to the Inner Harbor and the Baltimore Convention Center. The Interstate also serves the Camden Yards Sports Complex, which contains M&T Bank Stadium and Oriole Park at Camden Yards, homes of the Baltimore Ravens and Baltimore Orioles, respectively. I-395 also serves as the southern terminus of Martin Luther King Jr. Boulevard, an urban arterial that provides a western bypass of downtown Baltimore and connects I-95 with U.S. Route 40, US 1, and I-83. The Interstate is maintained by the Maryland Transportation Authority (MDTA) and, like all Interstates, is a part of the National Highway System.
Maryland Route 2 is the longest state highway in the U.S. state of Maryland. The 79.24-mile (127.52 km) route runs from Solomons Island in Calvert County north to an intersection with U.S. Route 1 /US 40 Truck in Baltimore. The route runs concurrent with MD 4 through much of Calvert County along a four-lane divided highway known as Solomons Island Road, passing through rural areas as well as the communities of Lusby, Port Republic, Prince Frederick, and Huntingtown. In Sunderland, MD 2 splits from MD 4 and continues north as two-lane undivided Solomons Island Road into Anne Arundel County, still passing through rural areas. Upon reaching Annapolis, the route runs concurrent with US 50/US 301 to the north the city. Between Annapolis and Baltimore, MD 2 runs along the Governor Ritchie Highway, a multilane divided highway that heads through suburban areas, passing through Arnold, Severna Park, Pasadena, Glen Burnie, and Brooklyn Park. In Baltimore, the route heads north on city streets and passes through the downtown area of the city.
Maryland Route 5 is a 74.34-mile (119.64 km) long state highway that runs north–south in the U.S. state of Maryland. The highway runs from Point Lookout in St. Mary's County north to the Washington, D.C. border in Suitland, Prince George's County. MD 5 begins as two-lane undivided Point Lookout Road which runs from Point Lookout to an intersection with MD 235 in the northern part of St. Mary's County. Point Lookout Road passes through rural areas as well as the county seat of Leonardtown. After the MD 235 intersection, the route becomes four-lane divided Three Notch Road and continues into Charles County, where it becomes Leonardtown Road. Here, the route bypasses Hughesville and continues north toward the Waldorf area, which it bypasses to the east on Mattawoman Beantown Road. The route merges onto U.S. Route 301 and enters Prince George's County, splitting from US 301 at an interchange in Brandywine. From here, MD 5 continues north on Branch Avenue, running through suburban areas, before becoming a freeway as it passes Andrews Air Force Base and has an interchange with Interstate 95 (I-95)/I-495. Past the Capital Beltway, the route runs through suburban areas of Hillcrest Heights and Suitland before reaching the Washington, D.C. border, where Branch Avenue SE continues, crossing Pennsylvania Avenue SE and eventually terminating at Randle Circle.
Maryland Route 210 is a state highway in the U.S. state of Maryland. Known as Indian Head Highway, the highway runs 20.86 miles (33.57 km) from Potomac Avenue in Indian Head north to the District of Columbia boundary in Forest Heights, where the highway continues into Washington as South Capitol Street. MD 210 is a four- to six-lane divided highway that connects Washington with the suburban communities of Oxon Hill, Fort Washington, and Accokeek in southwestern Prince George's County, and Bryans Road and Indian Head in northwestern Charles County. The highway also provides access to Fort Washington Park and Indian Head Naval Surface Warfare Center and, in conjunction with MD 228, connects Waldorf with Interstate 95 (I-95)/I-495 and I-295.
Maryland Route 147 is a state highway in the U.S. state of Maryland. Known as Harford Road, the state highway runs 18.82 miles (30.29 km) from U.S. Route 1 and US 40 Truck in Baltimore north to US 1 and US 1 Business in Benson. MD 147 is an alternate route to US 1 between Baltimore and Bel Air, the county seat of Harford County. The state highway is the main street of several neighborhoods in Northeast Baltimore and the Baltimore County suburbs of Parkville and Carney. MD 147 is maintained by the Maryland State Highway Administration in Baltimore and Harford counties and by the Baltimore City Department of Transportation within the city. Harford Road was a pair of turnpikes before the Baltimore–Carney portion of the highway was designated one of the original state roads. The Baltimore County section of MD 147 was constructed in the early 1910s and widened multiple times in the late 1920s and 1930s. The section of the state highway in Harford County was built in the late 1920s.
Maryland Route 150 (MD 150) is a state highway in the U.S. state of Maryland. Known for most of its length as either Eastern Avenue or Eastern Boulevard, the highway runs 13.01 miles (20.94 km) from U.S. Route 40 (US 40) in Baltimore east to Graces Quarters Road in Chase in eastern Baltimore County. MD 150 connects Baltimore with its southeastern suburbs of Dundalk, Essex, and Middle River. The state highway also links those communities with Interstate 95 (I-95), I-695, I-895, and Martin State Airport. MD 150 was constructed from Baltimore to Middle River and in Chase in the mid-1920s. The road was completed through Middle River in the early 1930s. Between 1942 and 1944, MD 150 was reconstructed as a four-lane divided highway with interchanges to improve access between Baltimore and the Glenn L. Martin Company aircraft manufacturing plant in Middle River. The highway has followed several routes since it was extended west into the city of Baltimore in the mid-1940s; the present route in East Baltimore was established shortly after 2000.
Maryland Route 151 (MD 151) is a state highway in the U.S. state of Maryland. Known for most of its length as North Point Boulevard, the state highway runs 10.80 miles (17.38 km) from 7th Street in Sparrows Point north to U.S. Route 1 (US 1) in Baltimore. MD 151 is a four- to six-lane divided highway that connects the communities of Edgemere and Dundalk on the Patapsco River Neck peninsula of southeastern Baltimore County with industrial areas in Sparrows Point and East Baltimore. MD 151 was originally constructed in the early 1920s from Sparrows Point to Edgemere. The highway was connected to Baltimore by the Baltimore County portion of MD 20, a number also assigned to the highway from Rock Hall to Chestertown in Kent County. During World War II, MD 151 was extended north through Dundalk on a new divided highway parallel to MD 20 and through East Baltimore on an expanded Erdman Avenue to connect the Bethlehem Steel complex at Sparrows Point with MD 150 and US 40. In the late 1960s and early 1970s, Interstate 695 (I-695) was constructed parallel to MD 151 between Edgemere and MD 157 in Dundalk.
Charles Street, known for most of its route as Maryland Route 139, runs through Baltimore City and through the Towson area of Baltimore County. On the north end it terminates at an intersection with Bellona Avenue near Interstate 695 (I-695) and at the south end it terminates in Federal Hill in Baltimore. Charles Street is one of the major routes through the city of Baltimore, and is a major public transportation corridor. For the one-way portions of Charles Street, the street is functionally complemented by the parallel St. Paul Street, Maryland Avenue, Cathedral Street, and Liberty Street.
Maryland Route 122 is a state highway in the U.S. state of Maryland. Known as Security Boulevard and Cooks Lane, the state highway runs 2.96 miles (4.76 km) from Rolling Road east to the Baltimore city limit within the western Baltimore County suburb of Woodlawn. MD 122 serves the headquarters of the Social Security Administration and connects the agency with Interstate 70 (I-70), I-695, and U.S. Route 40. Security Boulevard was constructed in 1960 concurrent with the completion of the Social Security Administration's new headquarters. The six-lane divided highway and the Baltimore County portion of Cooks Lane were transferred from county to state maintenance around 1991.
Maryland Route 173 is a state highway in the U.S. state of Maryland. Known for most of its length as Fort Smallwood Road, the state highway runs 13.78 miles (22.18 km) from Fort Smallwood Park near Jacobsville north to MD 2 in the Brooklyn neighborhood of Baltimore. MD 173 connects the beach communities of Riviera Beach and Orchard Beach in northeastern Anne Arundel County and Interstate 695 (I-695) with industrial areas in the Baltimore neighborhoods of Hawkins Point and Curtis Bay, including the United States Coast Guard Yard. MD 173 was mostly constructed in the 1920s and early 1930s. The state highway was put in its modern form with the completion of the bridge over Stony Creek in the late 1940s and expansion to a divided highway between Orchard Beach and Curtis Bay in the late 1970s.
Maryland Route 414 is a state highway in the U.S. state of Maryland. The highway runs 5.64 miles (9.08 km) from the beginning of state maintenance in Forest Heights east to MD 5 in Silver Hill. MD 414 connects the inner suburbs of Oxon Hill, Marlow Heights, and Silver Hill and provides access to National Harbor. The highway was constructed through Oxon Hill and Marlow Heights in the early 1930s. MD 414 was extended through Silver Hill along the old alignment of MD 5 when that highway bypassed Silver Hill in the early 1950s. The highway was expanded to a divided highway between Marlow Heights and Silver Hill in the early 1970s, around its interchange with Interstate 95 (I-95) and I-495 in the early 1980s, and around MD 210 in Oxon Hill in the late 1980s. MD 414 was reconstructed around MD 210 again in the mid-2000s with the construction of National Harbor and the new Woodrow Wilson Bridge.
U.S. Route 1 (US 1) is the easternmost and longest of the major north–south routes of the older 1920s era United States Numbered Highway System, running from Key West, Florida to Fort Kent, Maine.
Maryland Route 140 is a 49-mile (79 km) state highway in the U.S. state of Maryland. The route runs from U.S. Route 1 and US 40 Truck in Baltimore northwest to the Pennsylvania border, where the road continues into that state as Pennsylvania Route 16. MD 140 passes through the northern part of central Maryland, connecting Baltimore, Pikesville, Reisterstown, Westminster, Taneytown, and Emmitsburg.
Maryland Route 26 is a state highway in the U.S. state of Maryland. Known for most of its length as Liberty Road, the state highway runs 44.10 miles (70.97 km) from U.S. Route 15 in Frederick east to MD 140 in Baltimore. MD 26 connects Frederick and Baltimore with the highway's namesake of Libertytown in eastern Frederick County, the suburban area of Eldersburg in southern Carroll County, and the western Baltimore County suburbs of Randallstown, Milford Mill, and Lochearn. The highway also serves as a major thoroughfare in the western part of Baltimore, where the street is named Liberty Heights Avenue. MD 26 is maintained by the Maryland State Highway Administration outside of Baltimore and by the Baltimore City Department of Transportation within the city.
Maryland Route 130 is a state highway located in Baltimore County in the U.S. state of Maryland. Known as Greenspring Valley Road, the state highway runs 5.57 miles (8.96 km) from MD 140 in Garrison east to MD 25 in Brooklandville. MD 130 passes through the Green Spring Valley, an affluent area around the upper reaches of Jones Falls that contains Stevenson University. The state highway was paved by 1910 except for a gap near Stevenson that was closed in the mid-1930s.
Maryland Route 25, locally known for nearly its entire length as Falls Road, is a state highway in the U.S. state of Maryland. It begins north of downtown Baltimore, just north of Penn Station, and continues north through Baltimore County almost to the Pennsylvania state line. The road passes through the communities of Hampden, Medfield, Cross Keys, and Mount Washington in the city, and Brooklandville and Butler in Baltimore County. The entire length of MD 25 that uses Falls Road—and its county-maintained continuation north to Alesia—is a Maryland Scenic Byway, named the Falls Road Scenic Byway.
Old Court Road is a state- and county-maintained highway in the U.S. state of Maryland. Including the adjacent road in Howard County known as Woodstock Road, the highway runs 15.4 miles (24.8 km) from Maryland Route 99 near Woodstock east to Joppa Road near Towson. Old Court Road includes two county-maintained sections and two Maryland state highways, Maryland Route 125 and Maryland Route 133. MD 125 has a length of 3.59 miles (5.78 km) between Woodstock and the edge of Randallstown and MD 133 spans 3.31 miles (5.33 km) between MD 129 and MD 25 in Pikesville. Old Court Road connects the western and central Baltimore County communities of Granite, Randallstown, Milford Mill, Pikesville, and Towson. Old Court Road has been a cross-county highway since the colonial era. The highway was fully paved in Baltimore County by the mid-1920s, including the sections of the highway that became MD 125 and MD 133. MD 133 was extended west to MD 140 and MD 125 was extended west to MD 99 in the early 1930s; MD 125's terminus returned to the Patapsco River in the mid-1950s. Old Court Road was relocated at its eastern end in the early 1960s and in Pikesville in the late 1960s, at which time MD 133 assumed its current course.
Maryland Route 542 is a state highway in the U.S. state of Maryland. Known for most of its length as Loch Raven Boulevard, the state highway runs 6.33 miles (10.19 km) from MD 147 in Baltimore north to Interstate 695 (I-695) and Cromwell Bridge Road near Towson. MD 542 is a four-lane divided highway that connects portions of Northeast Baltimore with Towson and I-695. The state highway is maintained by the Maryland State Highway Administration in Baltimore County and the Baltimore City Department of Transportation in the city. MD 542 was constructed in the early to mid-1930s. The highway was expanded to a divided highway in Baltimore by 1950 and in Baltimore County in the mid- to late 1950s.
US 40 / MD 295 in Baltimore 
