Interstate 97 (I-97) is a north-south Interstate Highway in the eastern United States. It runs entirely within Anne Arundel County, Maryland, for 17.62 miles (28.36 km) from U.S. Route 50/U.S. Route 301 (US 50/US 301) in Parole near Annapolis north to I-695 and I-895 in Brooklyn Park near Baltimore. The interstate is the primary highway between Baltimore and Annapolis. I‑97 connects Annapolis with Baltimore/Washington International Airport and links the northern Anne Arundel County communities of Crownsville, Millersville, Severna Park, Glen Burnie, and Ferndale. It is the second shortest primary Interstate Highway after I-87 in North Carolina.
U.S. Route 113 (US 113) is a U.S. Highway that is a spur of US 13 in the U.S. states of Maryland and Delaware. The route runs 74.75 miles (120.30 km) from US 13 in Pocomoke City, Maryland, north to Delaware Route 1 (DE 1) in Milford, Delaware. In conjunction with DE 1, US 113 is one of two major north–south highways on the Delmarva Peninsula that connect Dover with Pocomoke City and the Eastern Shore of Virginia. The U.S. Highway is the primary north–south highway in Worcester County, Maryland, where it connects Pocomoke City with Snow Hill and Berlin. US 113 is one of three major north–south highways in Sussex County, Delaware, where it connects Selbyville, Millsboro, and Georgetown with Milford. While US 113 does not pass through Ocean City or the Delaware Beaches, the U.S. Highway intersects several highways that serve the Atlantic seaboard resorts, including US 50, Maryland Route 90 (MD 90), US 9, DE 404, DE 16, and DE 1. US 113 is a four-lane divided highway for its whole length.
The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program and the Federal Lands Highway Program. Its role had previously been performed by the Office of Road Inquiry, Office of Public Roads and the Bureau of Public Roads.
Connector M-13 is a north–south state trunkline highway running 2.41 miles (3.88 km) connecting Interstate 75/US Highway 23 (I-75/US 23) to M-13 near the community of Kawkawlin, just north of Bay City. The Michigan Department of Transportation (MDOT) internally calls the road Connector 13. The freeway was once the northern end of the US 23 freeway in the area before I-75 was built to the northwest and US 23 was rerouted to follow it. When these changes were made in 1967, Conn. M-13 was designated for the freeway stub.
The Tennessee Department of Transportation (TDOT) is the department of transportation for the State of Tennessee, with multimodal responsibilities in roadways, aviation, public transit, waterways, and railroads. It was established in 1915 as the Tennessee Department of Highways and Public Works, and renamed the Tennessee Department of Transportation in 1972. The core agency mission of TDOT is to provide a safe and reliable transportation system for people, goods, and services that supports economic prosperity in Tennessee. Since 1998, TDOT has been ranked amongst the top five in the nation for quality highway infrastructure. It is primarily headquartered in downtown Nashville and operates four regional offices in Chattanooga, Jackson, Knoxville, and Nashville.
M-113 is a state trunkline highway in the US state of Michigan that runs in southern Grand Traverse County, connecting M-37 in Mayfield Township to US Highway 131 (US 131) near Walton Junction. Running through rural farmland and dense woodland, M-113 provides access to the village of Kingsley, as well as offering a route from US 131 to Traverse City. First designated in November 1927, the highway was extended in 1940 by adding the southernmost section near Walton Junction, which was originally part of US 131.
M-221 is a short state trunkline highway in the Upper Peninsula (UP) of the US state of Michigan that connects M-28 with the community of Brimley and Brimley State Park. The highway was originally part of M-28 until the 1940s when it was briefly a local road. It has been a state highway again since it was designated as M-221 in 1945.
The Kentucky Transportation Cabinet (KYTC) is Kentucky's state-funded agency charged with building and maintaining federal highways and Kentucky state highways, as well as regulating other transportation related issues.
The Michigan Department of Transportation (MDOT) is a constitutional government principal department of the US state of Michigan. The primary purpose of MDOT is to maintain the Michigan State Trunkline Highway System which includes all Interstate, US and state highways in Michigan with the exception of the Mackinac Bridge. Other responsibilities that fall under MDOT's mandate include airports, shipping and rail in Michigan.
The Oklahoma Department of Transportation (ODOT) is an agency of the government of Oklahoma responsible for the construction and maintenance of the state's transportation infrastructure. Under the leadership of the Oklahoma secretary of transportation and ODOT executive director, the department maintains public infrastructure that includes highways and state-owned railroads and administers programs for county roads, city streets, public transit, passenger rail, waterways and active transportation. Along with the Oklahoma Turnpike Authority, the department is the primary infrastructure construction and maintenance agency of the State.
The New York City Department of Transportation (NYCDOT) is the agency of the government of New York City responsible for the management of much of New York City's transportation infrastructure. Ydanis Rodriguez is the Commissioner of the Department of Transportation, and was appointed by Mayor Eric Adams on January 1, 2022. Former Commissioners have included Polly Trottenberg, Janette Sadik-Khan, and Iris Weinshall. The NYCDOT has a training center in eastern Queens.
M-199 is a state trunkline highway near Albion in the US state of Michigan. The western terminus of the 4.030-mile-long (6.486 km) road is in Sheridan Township at exit 119 off Interstate 94 (I-94). The eastern terminus is a junction with Business Loop I-94 downtown Albion. The entire road is within Calhoun County and runs through rural farm fields outside of Albion; in town it is a residential street. The M-199 designation had previously been applied to a highway in the Upper Peninsula in the 1930s. The current highway was previously part of other highways in the first half of the 20th century before it was transferred to local control around 1960. It was later transferred back to state control in 1998 and remains unchanged since.
The Delaware Department of Transportation (DelDOT) is an agency of the U.S. state of Delaware. The Secretary of Transportation is Nicole Majeski. The agency was established in 1917 and has its headquarters in Dover.
The Ohio Department of Transportation is the administrative department of the Ohio state government responsible for developing and maintaining all state and U.S. roadways outside of municipalities and all Interstates except the Ohio Turnpike. In addition to highways, the department also helps develop public transportation and public aviation programs. ODOT is headquartered in Columbus, Ohio. Formerly, under the direction of Michael Massa, ODOT initiated a series of interstate-based Travel Information Centers, which were later transferred to local sectors. The Director of Transportation is part of the Governor's Cabinet.
M-553 is a north–south state trunkline highway in the Upper Peninsula (UP) of the US state of Michigan. It connects M-35 near Gwinn with the Marquette Bypass, an expressway carrying US Highway 41 (US 41) and M-28 in Marquette. M-553 connects Marquette with Sawyer International Airport at the unincorporated community of K.I. Sawyer AFB, the former site of a US Air Force base, in the Sands Plains area of Marquette County. The intersection with County Road 480 (CR 480) in Sands Township, known locally as the Crossroads, is the site of several businesses. North of this location, M-553 runs through some hilly terrain around a local ski hill.
Interstate 81 (I-81) is a part of the Interstate Highway System that runs from Dandridge, Tennessee, to Fishers Landing, New York. In Maryland, the Interstate Highway runs 12.08 miles (19.44 km) from the West Virginia state line at the Potomac River in Williamsport north to the Pennsylvania state line near Maugansville. I-81 is the primary north–south Interstate Highway in Washington County, connecting Hagerstown with Chambersburg and Harrisburg to the north and Martinsburg, Winchester, and Roanoke to the south.
The Mississippi Department of Transportation (MDOT) is the organization in charge of developing and maintaining all state and federal roadways in the U.S. state of Mississippi. In addition to highways, the department also has a limited role in supporting Mississippi's public transportation system, ports and waterways system, aeronautics and railroads. MDOT is headquartered in downtown Jackson.
The State Trunkline Highway System consists of all the state highways in Michigan, including those designated as Interstate, United States Numbered, or State Trunkline highways. In their abbreviated format, these classifications are applied to highway numbers with an I-, US, or M- prefix, respectively. The system is maintained by the Michigan Department of Transportation (MDOT) and comprises 9,669 miles (15,561 km) of trunklines in all 83 counties of the state on both the Upper and Lower peninsulas, which are linked by the Mackinac Bridge. Components of the system range in scale from 10-lane urban freeways with local-express lanes to two-lane rural undivided highways to a non-motorized highway on Mackinac Island where cars are forbidden. The longest highway is nearly 400 miles (640 km) long, while the shortest is about three-quarters of a mile. Some roads are unsigned highways, lacking signage to indicate their maintenance by MDOT; these may be remnants of highways that are still under state control whose designations were decommissioned or roadway segments left over from realignment projects.
The District Department of Transportation is an agency of the government of the District of Columbia, in the United States, which manages and maintains publicly owned transportation infrastructure in the District of Columbia. DDOT is the lead agency with authority over the planning, design, construction, and maintenance of alleys, bridges, sidewalks, streets, street lights, and traffic signals in the District of Columbia.
A permanently signed detour route is a type of route which is used temporarily during special circumstances. Various areas have developed these systems as part of incident management. The purpose of these routes is to provide a detour in the event that the parent route is impassable, due to either a traffic jams, traffic collision, or road closure. Sometimes these routes are signed as a prefixed or suffixed numbered road, making them a type of special route.
