Interstate 335

Interstate 335 is a designation applied in different contexts to auxiliary routes in the United States Interstate Highway System. Several corridors have borne the number, proposed or constructed, serving urban bypasses, spurs, and connectors adjacent to principal routes such as Interstate 35, Interstate 90, Interstate 94, and Interstate 80. These corridors have intersected notable corridors, municipalities, and transportation networks including U.S. Route 1, U.S. Route 66, State Route 520, State Route 520 (Washington), and municipal arterials in major metropolitan areas such as Chicago, Minneapolis, St. Louis, and Phoenix.

Route description

Various incarnations of the route number have functioned as short urban connectors, radial spurs, or partial beltways. In urban cores the designation typically links principal interstates—examples include connections between Interstate 35W (Texas), Interstate 35E (Texas), and downtown nodes near Dallas or Fort Worth. Segments have paralleled rail corridors operated by Union Pacific Railroad, BNSF Railway, and Metra while traversing industrial zones adjacent to Chicago River tributaries and port areas near San Francisco Bay and Port of Los Angeles. Typical cross-streets and interchanges incorporate state highways such as State Route 87 (Arizona), State Route 520 (Washington), and tolled express lanes linking to facilities like San Francisco International Airport, Los Angeles International Airport, Minneapolis–Saint Paul International Airport, or intermodal yards associated with Amtrak and Freightliner operators. Right-of-way constraints have produced elevated viaducts, depressed trenches, and collector–distributor systems to interface with urban grids like Loop 101 (Arizona), I-275 (Ohio–Michigan), and municipal boulevards named for figures tied to regional history such as Martin Luther King Jr. Boulevard and Jefferson Street (Louisville).

History

Proposals for the number emerged amid mid-20th-century planning efforts driven by agencies including the Federal Highway Administration and state departments such as the California Department of Transportation, Minnesota Department of Transportation, and Arizona Department of Transportation. Early planning tied to the Interstate Highway System expansion after the Federal-Aid Highway Act of 1956 envisioned spurs to channel traffic from radial interstates into central business districts like Chicago Loop, Downtown Phoenix, and Minneapolis Central Business District. Some proposals were canceled following urban renewal controversies exemplified by public opposition movements tied to events such as the 1968 Chicago riots and environmental litigation involving organizations such as Sierra Club and Natural Resources Defense Council. Other segments were built during later decades alongside projects like the Big Dig-era mitigation and regional congestion relief initiatives funded under programs associated with the Department of Transportation (United States). Throughout, planning referenced regional documents including metropolitan planning organization (MPO) studies from entities like Metropolitan Council (Minnesota), Metropolitan Transportation Authority (New York)-area parallels, and corridor studies tied to federal grants like those under Intermodal Surface Transportation Efficiency Act of 1991.

Exit list

Exit numbering on incarnations of the designation follows local mileposting conventions of state agencies, with typical interchanges at major routes such as Interstate 10, Interstate 35, Interstate 80, Interstate 94, and federal routes including U.S. Route 1, U.S. Route 20, and U.S. Route 66 in legacy alignments. Urban exit sequences commonly include: - Major downtown access ramps to corridors named for civic leaders and historical figures such as Martin Luther King Jr. Boulevard and Jefferson Street (Louisville). - Connections to ports and airports including Port of Los Angeles, San Francisco International Airport, Los Angeles International Airport, and Minneapolis–Saint Paul International Airport. - Interchanges with state routes such as State Route 87 (Arizona), State Route 520 (Washington), and key beltways including Loop 101 (Arizona) and I-275 (Ohio–Michigan). Local signage and ramp geometry have reflected design standards promulgated by organizations like the American Association of State Highway and Transportation Officials.

Traffic and usage

Traffic volumes on routes designated with this number vary widely, from commuter-heavy urban segments serving Chicago and Minneapolis employment centers to lower-volume connector spurs near suburban nodes influenced by Sun Belt growth patterns in Phoenix and Dallas–Fort Worth metroplex. Peak-hour flows often interact with transit services operated by agencies such as Metra, Chicago Transit Authority, Metro Transit (Minnesota), and Valley Metro (Phoenix), and freight movements tied to Union Pacific Railroad and BNSF Railway. Congestion hotspots generally occur at merges with radial interstates and at interchanges serving major commercial zones near Los Angeles, San Francisco, and Houston. Safety and crash data for comparable urban spur corridors have been analyzed in academic work from institutions such as Massachusetts Institute of Technology, University of California, Berkeley, and University of Minnesota.

Future plans and improvements

Planned interventions for corridors that once carried or may carry the number include interchange reconfigurations, capacity additions, multimodal integration, and corridor reconstructions led by state DOTs and MPOs. Projects draw funding from federal programs such as surface transportation blocks and competitive grants previously awarded under initiatives aligned with the Infrastructure Investment and Jobs Act and involve partnerships with regional agencies like Metropolitan Council (Minnesota) and the Los Angeles County Metropolitan Transportation Authority. Proposals emphasize resilient design to address climate risks recognized by entities such as the National Oceanic and Atmospheric Administration and incorporate complete-streets principles advocated by organizations including Smart Growth America and Rails-to-Trails Conservancy where rights-of-way permit conversion for bicycle and pedestrian connectivity. Adaptive reuse concepts have been inspired by projects like the High Line in New York City and waterfront reconnections completed in Boston and San Francisco Bay Area, suggesting potential for decking, caps, or linear parks where urban context and funding converge.

Category:Auxiliary Interstate Highways