Illinois Route 50

Illinois Route 50
State	IL
Type	IL
Route	50
Length mi	66.07
Established	1924
Direction a	South
Terminus a	Kankakee
Direction b	North
Terminus b	Chicago
Counties	Kankakee County, Will County, Cook County

Illinois Route 50 is a north–south state highway in northeastern Illinois linking Kankakee to Chicago. The route serves as a parallel arterial to Interstate 57, U.S. Route 45, and U.S. Route 30 across suburban and urban corridors, connecting municipal centers such as Manteno, Crete, Homewood, and Cicero. Illinois Route 50 functions as a major surface street with signalized intersections, grade crossings, and commercial frontage that reflect nineteenth- and twentieth-century transportation planning in the Midwestern United States.

Route description

Illinois Route 50 begins at an intersection with U.S. Route 45 near Kankakee River State Park and proceeds north as a multilane arterial through Kankakee County into Will County. The corridor passes near Kankakee River State Park, Rend Lake, and through downtown Kankakee before meeting Interstate 57 and U.S. Route 45 interchanges that provide regional connectivity to Memphis, St. Louis, and Chicago. North of Manteno the roadway traverses agricultural plains adjacent to Kankakee River Valley, intersecting state routes and county highways that serve Will County townships and commuter patterns oriented toward Chicago and Joliet.

Entering the south suburban ring, Illinois Route 50 becomes an urban arterial through Crete, Steger, and Chicago Heights, where it intersects U.S. Route 30 and provides access to Lincoln Highway alignments. The alignment continues through Homewood and Flossmoor, serving Metra commuter rail stations on lines to LaSalle Street Station and Midway International Airport. In Cook County the highway is known locally as Cicero Avenue in sections, running adjacent to Cicero, Berwyn, Oak Park, and terminating near Chicago Loop neighborhoods that connect to arterial routes including Lake Shore Drive and Interstate 90.

History

The corridor that became Illinois Route 50 traces nineteenth-century plank roads and early twentieth-century state road projects that linked Kankakee and Chicago for agricultural and industrial supply chains supplying Pullman Company yards and steel mills near Calumet Region. Designated in the 1920s as part of statewide route numbering initiatives following models used in Indiana and Ohio, the route supplanted several county roads and incorporated alignments used by interurban streetcar lines that connected South Suburban Chicago towns.

Mid-century improvements paralleled federal highway expansion influenced by the Federal Aid Highway Act of 1956 and the growth of Chicago metropolitan area suburbs, prompting resurfacing, lane additions, and grade separation at rail crossings. Commercial corridor redevelopment in the late twentieth and early twenty-first centuries reflected retail shifts similar to those along U.S. Route 66 corridors, with big-box developments, strip malls, and zoning changes in municipalities such as Oak Lawn and Cicero.

Major intersections

Illinois Route 50 intersects several principal highways and municipal connectors: junctions with U.S. Route 45 at its southern terminus near Kankakee; interchange complexes with Interstate 57 south of Manteno; crossings of U.S. Route 30 in Chicago Heights; intersections with Illinois Route 83 and Illinois Route 1 in south suburban corridors; and northern termini connections near Interstate 90/Kennedy Expressway access to downtown Chicago. The route also intersects multiple Metra and freight rail corridors owned by Union Pacific Railroad, CSX Transportation, and BNSF Railway, affecting signal timing and right-of-way management.

Auxiliary routes and former alignments

Several former alignments and local bypasses parallel Illinois Route 50. Old surface alignments were redesignated as county highways under Will County and Cook County jurisdictions, creating business routes and truck bypasses through industrial districts such as those serving the Calumet River industrial corridor. In the twentieth century, municipal realignments created short spur connectors to facilities like Joliet Iron Works and commuter parks near Metra Electric District stations. Proposals historically considered state-maintained truck routes that would redirect heavy vehicles to Interstate 80 and Interstate 57 to reduce pavement wear on urban sections.

Traffic and maintenance

Traffic volumes along Illinois Route 50 vary from moderate rural counts in Kankakee County to high urban peak flows in Cook County suburbs, with congestion concentrated at intersections with U.S. Route 30 and interchanges near Interstate 57. Maintenance responsibilities are shared between the Illinois Department of Transportation for state-designated segments and county highway departments for sections that have been turned back to local control; coordination involves pavement rehabilitation, snow removal, signage consistent with Manual on Uniform Traffic Control Devices practices, and right-of-way management adjacent to utilities owned by ComEd and regional transit agencies.

Accident and safety initiatives have included corridor studies influenced by federal safety grant programs and local Complete Streets efforts in municipalities such as Homewood and Flossmoor to improve pedestrian crossings near Metra stations and school zones adjacent to Thornton Fractional High School District 215.

Future developments and improvements

Planned improvements emphasize intersection upgrades, signal coordination, and multimodal enhancements coordinated with regional plans from Chicago Metropolitan Agency for Planning and Metropolitan Planning Council. Projects under consideration include capacity enhancements at bottlenecks near I-57 interchanges, reconstruction of aging pavement structures to modern load-bearing standards adopted after analyses similar to those for U.S. Route 45, and transit-oriented development around commuter rail stations influenced by Transit-Oriented Development precedents in Evanston and Oak Park. Funding proposals have sought federal surface transportation grants and state capital appropriations administered by the Illinois Department of Transportation.

Category:State highways in Illinois