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| Interstate 380 (Iowa) | |
|---|---|
| State | IA |
| Route | 380 |
| Length mi | 73.4 |
| Established | 1980 |
| Terminus a | Cedar Rapids |
| Terminus b | Iowa City / Waterloo |
| Counties | Linn County, Johnson County, Black Hawk County |
Interstate 380 (Iowa) is an Interstate Highway in the United States that forms a primary north–south corridor in northeastern Iowa. Connecting Interstate 80 near Cedar Rapids with Interstate 35/Interstate 80 via Interstate 29-linked routes toward Minneapolis–Saint Paul, the route serves regional centers including Iowa City, Coralville, and Waterloo. It functions as a major link between the Quad Cities/Davenport–Bettendorf corridor and the Cedar Valley/University of Iowa region while providing access to cultural institutions, medical centers, and industrial facilities.
I-380 begins at a trumpet interchange with Interstate 80 near Tiffin and proceeds north through Linn County toward Cedar Rapids, passing near Eastern Iowa Airport. The route parallels the Cedar River corridor and intersects U.S. Route 30 and state routes that provide access to downtown Cedar Rapids, the Kirkwood Community College campus, and the University of Iowa Hospitals and Clinics complex in Iowa City. Northbound, I-380 crosses into Johnson County and serves Coralville via interchanges with U.S. Route 6 and Iowa 965 near the Iowa River Landing. The freeway continues toward North Liberty and Solon, then swings northwest, entering Black Hawk County and approaching Cedar Falls and Waterloo, where it terminates at a junction with U.S. Route 20 and connects indirectly to Interstate 35 and Interstate 29 via the regional network. Along the alignment, I-380 intersects routes that serve destinations such as the National Czech & Slovak Museum and Library, Paramount Theatre (Cedar Rapids), Coral Ridge Mall, Brucemore, Hancher Auditorium, and University of Northern Iowa.
Planning for I-380 emerged in the context of the Federal-Aid Highway Act of 1956 and regional proposals involving Iowa Department of Transportation priorities and local officials from Cedar Rapids, Iowa City, and Waterloo. Early alignments were discussed at meetings in Des Moines and were influenced by studies from Midwest regional planning commissions and traffic projections tied to institutions such as the University of Iowa, Luther College, and industrial employers including John Deere, Kaiser Aluminum, and Rockwell Collins. Construction phases proceeded in stages during the 1970s and 1980s, with major milestones including opening segments near Cedar Rapids Municipal Airport and completion of the northern extension toward Waterloo that tied into U.S. 218 and U.S. 20. Controversies over routing affected neighborhoods near Mount Vernon Road and environmental reviews tied to the Cedar River floodplain, involving agencies such as the Environmental Protection Agency and the Iowa Department of Natural Resources. Subsequent improvements were funded through state bonds, federal Interstate funds, and local contributions from entities including Linn County Board of Supervisors and Black Hawk County Board of Supervisors.
Major interchanges on I-380 include the southern terminus at I-80 near Tiffin, interchanges with US 30 serving Cedar Rapids Municipal Airport and Downtown Cedar Rapids, connections to IA 13 toward Marion, ramps to US 151 providing access to Anamosa and Prairie du Chien corridors, junctions with US 6/IA 965 at Coralville, access to Iowa City via I-80 Business and arterial links to the University of Iowa, and the northern terminus connections with US 20 near Cedar Falls/Waterloo. The exit sequence serves major facilities such as St. Luke's Hospital (Cedar Rapids), Mercy Hospital (Cedar Rapids), University of Iowa Hospitals and Clinics, and regional transit hubs affiliated with Cedar Rapids Transit and City of Iowa City Transit.
I-380 supports commuter flows between Cedar Rapids and Iowa City driven by employment centers like Rockwell Collins, UnityPoint Health, and the University of Iowa, as well as freight movements tied to Union Pacific Railroad intermodal terminals and agricultural shipments to facilities such as Cargill and ADM. Seasonal traffic peaks coincide with events at Kinnick Stadium, performances at Hancher Auditorium, and festivals like Iowa Arts Festival and Linn County Fair. Traffic counts recorded by the Iowa Department of Transportation show higher average annual daily traffic near the Coralville Lake corridor and southern approaches to Cedar Rapids, with freight vehicle percentages reflecting connections to Interstate 80 and US 20 freight corridors managed under federal Federal Highway Administration guidelines. Incidents, detours, and maintenance operations frequently involve coordination with Iowa State Patrol and local emergency services from Johnson County Sheriff’s Office and Linn County Emergency Management Agency.
Planned projects include lane expansions, interchange reconstructions, and bridge rehabilitations funded through state transportation programs and potential federal grants administered by the Federal Highway Administration and influenced by legislative measures such as transportation reauthorization acts debated in Congress. Proposals under study involve capacity upgrades near Coralville to address congestion from Iowa River Landing development, resilience measures for Cedar River flood mitigation in coordination with the Army Corps of Engineers, and safety improvements like intelligent transportation systems linked to statewide deployments by the Iowa DOT. Regional priorities discussed at meetings of the Metropolitan Planning Organization (MPO) and county planners include multimodal access enhancements to Cedar Rapids Regional Airport, park-and-ride facilities supporting Iowa City Transit, and potential revisions to interchange geometry near North Liberty to accommodate projected population growth.
I-380 connects with several principal routes including I-80, US 20, US 30, US 151, and state highways such as IA 13, IA 965, and IA 1. The corridor interfaces with local arterials that link to institutions including the University of Iowa, the University of Northern Iowa, Linn-Mar Community School District, and cultural sites like the Brucemore Historic Estate and Paramount Theatre (Cedar Rapids). Freight and passenger rail connections nearby include Cedar Rapids and Iowa City Railway operations and Iowa Interstate Railroad interchanges that support industrial parks serving companies such as Kirkwood Community College training programs and regional logistics providers.
Category:Interstate Highways in Iowa Category:Transportation in Linn County, Iowa Category:Transportation in Johnson County, Iowa Category:Transportation in Black Hawk County, Iowa