Interstate 215 (Utah)

Interstate 215 (Utah)
State	Utah
Route	Interstate 215
Alternate name	Salt Lake Belt Route
Length mi	28.4
Established	1962
Maint	Utah Department of Transportation
Direction a	South
Terminus a	Interstate 15 near Sandy
Junctions	I‑15 in Murray; I‑80 in Salt Lake City; I‑84 in Salt Lake County
Direction b	North
Terminus b	Interstate 15 in North Salt Lake
Counties	Salt Lake County

Interstate 215 (Utah) is an auxiliary Interstate Highway forming a three-quarter belt around Salt Lake City, providing connections among I‑15, I‑80, and I‑84. Serving suburbs such as Sandy, Murray, West Valley City, and North Salt Lake, it functions as a major freight and commuter corridor for Salt Lake County. The route supports regional access to major facilities including Salt Lake International Airport, University of Utah, and downtown Salt Lake City via connecting routes.

Route description

I‑215 begins at a trumpet/diamond interchange with I‑15 near Sandy and heads northwest as a six- to eight-lane freeway through Cottonwood Heights and Murray, intersecting arterials that serve University of Utah and Salt Lake Community College. The beltway crosses the Jordan River and passes near Jordan River Parkway, offering connections to West Jordan and South Jordan via surface routes. It continues west toward West Valley City intersecting SR‑201 and SR‑48, then turns north along the Great Salt Lake Desert’s eastern urban edge toward North Salt Lake where it rejoins I‑15. Along its course I‑215 interfaces with I‑80, providing a link for traffic bound for Wendover and Salt Lake City International Airport, and meets I‑84 connections used by traffic to Ogden and Clearfield.

History

Planning for a beltway around Salt Lake City began amid post‑war highway expansion influenced by the Federal Aid Highway Act of 1956, with routing and alignment debates involving Utah Department of Transportation and local municipalities such as Salt Lake City and Sandy. Early segments were opened in the 1960s as part of the growing Interstate Highway System, with subsequent additions in the 1970s and 1980s completing much of the loop. The corridor’s development intersected with urban projects associated with Salt Lake County, Salt Lake City International Airport, and redevelopment efforts around downtown Salt Lake City and Murray. Major realignments and interchange reconstructions in later decades reflected increasing commuter demands from suburbs including West Valley City and South Jordan.

Construction and improvements

Construction milestones included initial earthworks and bridgeworks during the 1960s, interchange builds tied to expansions of I‑15 and I‑80, and lane additions responding to growth in Salt Lake County. Notable projects involved interchange upgrades near Murray coordinated with Utah Transit Authority light rail expansions and frontage improvements servicing SR‑154 (Bangerter Highway). Recent decades saw seismic retrofits and noise‑mitigation installations influenced by standards from agencies such as the Federal Highway Administration and regional planning by the Wasatch Front Regional Council. Major reconstruction phases included widening, collector‑distributor lanes, and replacement of aging overpasses near I‑80 to improve freight movement to Salt Lake City International Airport.

Exit list

The I‑215 exit sequence serves dozens of interchanges with principal access to cities and facilities: starting at I‑15 near Sandy (south terminus), key exits include connections to SR‑190 for access to Little Cottonwood Canyon, interchanges at Murray serving I‑15 and local arterials, junctions with SR‑201 toward Salt Lake City International Airport, cross connections to I‑80, ramps to Bangerter Highway, and the northern terminus reconnecting with I‑15 in North Salt Lake. The corridor’s exit numbering reflects mileposts and has been adjusted during reconstruction projects; detailed signage aligns with standards from the American Association of State Highway and Transportation Officials.

Traffic and usage

I‑215 carries heavy commuter volumes between suburbs such as Sandy, Murray, West Valley City, and North Salt Lake, with peak congestion linked to employment centers in Salt Lake City and access to University of Utah. Freight traffic uses I‑215 to bypass central downtown and reach facilities serving Salt Lake City International Airport and industrial zones near West Valley City and North Salt Lake. Traffic counts collected by the Utah Department of Transportation show varied annual average daily traffic along segments, with busiest sections adjacent to I‑15 and I‑80 junctions. Multimodal integration includes park‑and‑ride lots associated with Utah Transit Authority services and connections to commuter rail corridors serving Draper and Ogden.

Future plans and proposals

Planned improvements focus on interchange modernization, added capacity, and enhanced multimodal access coordinated by the Utah Department of Transportation and regional agencies including the Wasatch Front Regional Council and Utah Transit Authority. Proposals have included managed lanes, improvements to freight connectors to Salt Lake City International Airport, and environmental mitigations in coordination with Utah Division of Air Quality and U.S. Environmental Protection Agency. Local governments such as Salt Lake City and West Valley City have advocated for community‑sensitive designs to address noise and neighborhood connectivity, while stakeholder input from entities like Salt Lake County and business groups near Murray shapes phasing and funding strategies.

Category:Interstate Highways in Utah