The National Road was the first major improved highway in the United States built by the federal government. Built between 1811 and 1837, the 620-mile (1,000 km) road connected the Potomac and Ohio Rivers and was a main transport path to the West for thousands of settlers. When improved in the 1830s, it became the second U.S. road surfaced with the macadam process pioneered by Scotsman John Loudon McAdam.
U.S. Route 68 is a United States highway that runs for 560 miles (900 km) from northwest Ohio to Western Kentucky. The highway's western terminus is at US 62 in Reidland, Kentucky. Its present northern terminus is at Interstate 75 in Findlay, Ohio, though the route once extended as far north as Toledo. US 68 intersects with US 62 three times during its route.
U.S. Route 522 is a spur route of US 22 in the states of Virginia, West Virginia, Maryland, and Pennsylvania. The U.S. Highway travels in a north-south direction, and runs 308.59 miles (496.63 km) from US 60 near Powhatan, Virginia, to its northern terminus at US 11 and US 15 near Selinsgrove, Pennsylvania. US 522 serves many small cities and towns in the Piedmont, Blue Ridge Mountains, and northern Shenandoah Valley of Virginia. The highway serves the Virginia communities of Goochland, Mineral, Culpeper, the town of Washington, and Front Royal and the independent city of Winchester. US 522 then follows the Ridge-and-Valley Appalachians north and then east through the Eastern Panhandle of West Virginia, a 2-mile-wide (3.2 km) stretch of Western Maryland, and South Central Pennsylvania to its terminus in the Susquehanna Valley. The highway serves Berkeley Springs, West Virginia; Hancock, Maryland; and the Pennsylvania communities of McConnellsburg, Mount Union, Lewistown, and Middleburg.
U.S. Route 340 is a spur route of US 40, and runs from Greenville, Virginia, to Frederick, Maryland. In Virginia, it runs north–south, parallel and east of US 11, from US 11 north of Greenville via Waynesboro, Grottoes, Elkton, Luray, Front Royal, and Berryville to the West Virginia state line. A short separate piece crosses northern Loudoun County on its way from West Virginia to Maryland.
The Iron Horse Regional Trail is a rail trail for pedestrians, horse riders and bicycles in the East Bay Area in California.
Clara Barton Parkway is an automobile parkway in the U.S. state of Maryland and the District of Columbia. The highway runs 6.8 miles (10.9 km) from MacArthur Boulevard in Carderock, Maryland, east to Canal Road at the Chain Bridge in Washington. Clara Barton Parkway is a two- to four-lane parkway that parallels the Potomac River and the Chesapeake and Ohio Canal (C&O) in southwestern Montgomery County, Maryland, and the far western corner of Washington. The parkway provides access to the communities of Cabin John and Glen Echo and several units of the Chesapeake and Ohio Canal National Historical Park. The Maryland portion of the George Washington Memorial Parkway was constructed from Carderock past Interstate 495 (I-495) to Glen Echo in the early to mid-1960s. The parkway was proposed to continue west to Great Falls and east to Georgetown. However, these proposals never came to fruition and the parkway was extended only to the Chain Bridge in the early 1970s. The Maryland portion of the George Washington Memorial Parkway was renamed in 1989 for Clara Barton, the founder of the American Red Cross, and whose original headquarters is located in Glen Echo.
Ernest W. Barrett Parkway is a major thoroughfare in the northwestern part of the Atlanta metropolitan area, in the north-central part of Cobb County, in the U.S. state of Georgia. It travels from the southeastern edge of Kennesaw to a point north of Marietta, and continues on in both directions under other names. The portion of Barrett Parkway between Interstate 575 (I-575/SR 5) and US 41/SR 3 is designated State Route 5 Connector. The road is named after Ernest W. Barrett, the first chairman of the Cobb County Board of Commissioners in the 1960s, after home rule was enacted under a Georgia State Constitution amendment. The initial portion was constructed through Barrett family land, enabling it to be later sold for major development.
Route 87 is a highway in central Missouri. Its southern terminus is at U.S. Route 54 in Eldon, and its northern terminus is at Route 5/240 in Glasgow. Parts of the road are overlapped by the Lewis and Clark Trail and Santa Fe Trail.
State Road 12 (SR 12) is an east–west route in the Florida Panhandle, running from SR 20 in Bristol to U.S. Route 27 (US 27) in Havana.
Maryland Route 7 (MD 7) is a collection of state highways in the U.S. state of Maryland. Known for much of their length as Philadelphia Road, there are five disjoint mainline sections of the highway totaling 40.23 miles (64.74 km) that parallel U.S. Route 40 (US 40) in Baltimore, Harford, and Cecil counties in northeastern Maryland. The longest section of MD 7 begins at US 40 just east of the city of Baltimore in Rosedale and extends through eastern Baltimore County and southern Harford County to US 40 in Aberdeen. The next segment of the state highway is a C-shaped route through Havre de Grace on the west bank of the Susquehanna River. The third mainline section of MD 7 begins in Perryville on the east bank of the Susquehanna River and ends at US 40 a short distance west of the start of the fourth section, which passes through Charlestown and North East before ending at US 40, just west of Elkton. The fifth segment of the highway begins at South Street and passes through the eastern part of Elkton before reconnecting with US 40 east of Elkton and west of the Delaware state line.
Maryland Route 17 is a state highway in the U.S. state of Maryland. The state highway begins at the Virginia state line at the Potomac River in Brunswick, where the highway continues south as Virginia State Route 287. MD 17 runs 29.49 miles (47.46 km) north from the Brunswick Bridge to the Frederick–Washington county line near Wolfsville. The state highway serves as the main north–south highway of the Middletown Valley of western Frederick County. MD 17 connects Brunswick and Wolfsville with Rosemont, Burkittsville, Middletown, and Myersville. The state highway also connects those communities with the valley's main east–west highways, which include U.S. Route 340, US 40 Alternate, Interstate 70 (I-70), and US 40.
Pennsylvania Route 65 is a major 51-mile-long (82 km) state highway located in western Pennsylvania, United States. The route, traveling north–south from the Interstate 279/U.S. Route 19 Truck concurrency in Pittsburgh north to the PA 108/PA 168 concurrency in New Castle, connects downtown Pittsburgh to the northwestern portion of the Pittsburgh Metropolitan Area. PA 65 is similar in its purpose to PA 18 and PA 51, both of which run parallel to PA 65 at one point or another; however, the three routes pass through different cities for most of their respective alignments.
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. In the U.S. state of Maryland, it runs 81 miles (130 km) from the Washington, D.C. line to the Pennsylvania state line near the town of Rising Sun.
U.S. Route 40 in the U.S. state of Maryland runs from Garrett County in Western Maryland to Cecil County in the state's northeastern corner. With a total length of 221 miles (356 km), it is the longest numbered highway in Maryland. Almost half of the road overlaps or parallels with Interstate 68 (I-68) or I-70, while the old alignment is generally known as US 40 Alternate, US 40 Scenic, or Maryland Route 144. West of Baltimore, in the Piedmont and Appalachian Mountains / Blue Ridge region of the Western Maryland panhandle of the small state, the portions where it does not overlap an Interstate highway are mostly two-lane roads. The portion northeast of Baltimore going toward Wilmington in northern Delaware and Philadelphia in southeastern Pennsylvania is a four-lane divided highway, known as the Pulaski Highway. This section crosses the Susquehanna River at the north end of the Chesapeake Bay on the Thomas J. Hatem Memorial Bridge.
U.S. Route 11 (US 11) is a part of the United States Numbered Highway System that runs from New Orleans, Louisiana, to Rouses Point, New York. In Maryland, the federal highway runs 12.83 miles (20.65 km) from the West Virginia state line at the Potomac River in Williamsport north to the Pennsylvania state line near Maugansville. US 11 is the primary north–south surface highway in central Washington County, connecting Hagerstown with Williamsport to the south and Hagerstown Regional Airport to the north. The federal highway was once a major long-distance highway, but that role has been assumed by Interstate 81 (I-81), which parallels US 11 not only in Maryland but for most of its course from Tennessee to Upstate New York. US 11 is maintained by the Maryland State Highway Administration except for the municipally-maintained portions within the corporate limits of Williamsport and Hagerstown.
U.S. Route 90 (US 90) in the state of Florida is the northernmost east–west United States Numbered Highway in the state. US 90 passes through the county seats of all 15 counties on its course in Florida, and it is also the road upon which many of the county courthouses are located. It is never more than six miles (9.7 km) from Interstate 10 (I-10) throughout the state. It runs as a two-lane highway through most of the sparsely populated inland areas of the Florida Panhandle, widening to four lanes through and near several towns. The speed limit is 55 mph (89 km/h) for all rural points west of Monticello, and it is 60 mph (97 km/h) on all rural points from where it enters Madison County as far as Glen St. Mary.
U.S. Route 40 Alternate is the U.S. Highway designation for a former segment of U.S. Route 40 (US 40) through Garrett and Allegany counties in Maryland. The highway begins at US 40 near exit 14 on Interstate 68 (I-68) and runs 31.80 miles (51.18 km) eastward to Cumberland, where it ends at exit 44 on I-68. Alt US 40 is maintained by the Maryland State Highway Administration (MDSHA).
U.S. Route 441 (US 441) in the U.S. state of Georgia is a 354.2-mile-long (570.0 km) north–south United States Highway through the east-central portion of the state. It travels from the Florida state line near the Fargo city area to the North Carolina state line, in the northern part of Dillard. It is a spur route of US 41, although it has no intersections with its "parent" route within the state. It does have an intersection with another spur route of US 41 however, specifically US 341 in McRae–Helena.
State Route 555 is a 62.36-mile-long (100.36 km), north–south running state highway that passes through four counties in southeastern Ohio. State Route 555's southern terminus is at the concurrency of US 50, SR 7 and SR 32 in the unincorporated community of Little Hocking in extreme southwestern Washington County. Its northern terminus is at SR 60 in Wayne Township, just outside Zanesville. The route passes through primarily rural portions of Washington, Morgan, Perry, and Muskingum counties, connecting unincorporated villages along the way. Its emergence into southern Zanesville at the route's northern end takes the route into a more suburban setting before it terminates.
There are 19 business routes of Interstate 94 (I-94) in the United States. These business routes connect the downtown business districts of cities to the freeway along I-94.
