Indiana's highway network includes 14 Interstate highways and 18 U.S. highways, covering over 11,000 miles. Key routes like I-65, I-70, and the Indiana Toll Road (I-80/I-90) connect major cities such as Indianapolis, Fort Wayne, and Evansville, while facilitating cross-country travel and freight transport. Known as the "Crossroads of America," Indiana’s highways support millions of tons of freight annually, playing a vital role in the state’s economy and connecting the Midwest to the rest of the United States.
Explore the road map of Indiana state of USA showing interstate highways, US highways and other road network.
Indiana Interstate Highways
Overview of Indiana's Interstate System
Indiana's interstate highway network spans over 1,200 miles, providing essential connections within the state and to neighboring regions. Known as the "Crossroads of America," Indiana's interstates are a critical part of the national transportation system, facilitating commerce, travel, and logistics across the Midwest.
Primary Interstate Highways in Indiana
Interstate 65 (I-65)
I-65 is one of Indiana’s most significant north-south corridors, stretching 261 miles through the state. It connects cities like Indianapolis, Lafayette, and Gary, providing a key link between Louisville, Kentucky, and Chicago, Illinois. This route is vital for transporting goods and supporting manufacturing industries in the region.
Interstate 70 (I-70)
Running 156 miles across Indiana, I-70 is a major east-west route that connects Indianapolis to neighboring states, including Ohio and Illinois. It serves as a critical corridor for cross-country travel and freight, passing through major logistics hubs like the Indianapolis International Airport and its associated cargo facilities.
Interstate 80/90 (Indiana Toll Road)
The Indiana Toll Road is a combined section of I-80 and I-90, spanning 157 miles in the northern part of the state. It connects the Chicago metropolitan area to Ohio and serves as a vital route for cross-country travel and international trade through nearby Great Lakes ports.
Interstate 69 (I-69)
I-69 is a growing north-south corridor that currently extends from Evansville to Indianapolis, with plans for future expansion to Michigan. Covering 157 miles, it supports regional connectivity and economic development in southern Indiana.
Auxiliary Interstate Highways
Interstate 465 (I-465)
I-465 is a 53-mile beltway that encircles Indianapolis, providing access to the city from all directions. It connects with major interstates, including I-65, I-70, I-69, and I-74, facilitating local and through traffic.
Interstate 74 (I-74)
I-74 runs 171 miles through Indiana, connecting Indianapolis with Cincinnati, Ohio, and Champaign, Illinois. It plays a crucial role in supporting both regional and interstate commerce.
Interstate 94 (I-94)
Covering 45 miles in northwest Indiana, I-94 connects Chicago to Michigan, providing an essential corridor for industrial and freight traffic near Lake Michigan.
Economic and Transportation Importance
Indiana’s interstate highways facilitate the movement of millions of tons of freight each year, with major logistics hubs like Indianapolis and Gary serving as key nodes. The state's strategic location ensures seamless connections for industries such as manufacturing, agriculture, and logistics, making it a crucial part of the U.S. supply chain.
Safety and Infrastructure Improvements
Indiana invests heavily in maintaining and upgrading its interstate highways to improve safety and capacity. Projects include interchange upgrades, additional lanes, and smart traffic management systems. These efforts aim to handle increasing traffic volumes and reduce congestion.
Key Facts
Total Interstate Mileage: 1,200+ miles
Longest Interstate: I-65 (261 miles)
Major Cities Connected: Indianapolis, Fort Wayne, Evansville, Gary, South Bend
Key Economic Routes: I-65, I-70, and I-80/90
Year Established: 1956 under the Federal-Aid Highway Act
Primary Interstates
Interstate Highway
Length (miles)
Route Description
Key Cities Connected
Year Established
I-65
261
Runs north-south from the Kentucky border near Jeffersonville to the northwest corner near Gary, connecting Louisville, Indianapolis, and Chicago.
Indianapolis, Lafayette, Gary
1958
I-70
156
Spans east-west across Indiana from the Ohio border near Richmond to the Illinois border near Terre Haute.
Indianapolis, Terre Haute
1956
I-80/I-90 (Indiana Toll Road)
157
Runs through northern Indiana as a combined toll road, connecting Chicago to Ohio and facilitating cross-country travel.
South Bend, Elkhart, Gary
1956
I-69
157
Connects Evansville in the south to Indianapolis, with planned extensions to Michigan.
Evansville, Bloomington, Indianapolis
1971
I-74
171
Runs diagonally across Indiana, connecting Indianapolis to Cincinnati, Ohio, and Champaign, Illinois.
Indianapolis, Greensburg
1963
I-94
45
Traverses northwest Indiana, connecting Chicago to Michigan, running parallel to Lake Michigan.
Gary, Michigan City
1960
Auxiliary Interstates
Interstate Highway
Length (miles)
Type
Route Description
Key Cities Connected
Year Established
I-465
53
Beltway
A loop around Indianapolis, connecting I-65, I-69, I-70, and I-74, providing access to all parts of the city and surrounding areas.
Indianapolis
1959
I-275
3
Beltway
A small section in southeastern Indiana as part of the Cincinnati metropolitan area’s bypass.
Lawrenceburg
1970
I-469
31
Beltway
A loop around Fort Wayne, providing an alternative route to I-69 and improving traffic flow in northeastern Indiana.
Fort Wayne
1995
I-865
4.7
Connector
A short connector linking I-65 to I-465 northwest of Indianapolis, bypassing downtown traffic.
Indianapolis
2002
U.S. Highways in Indiana
Indiana's U.S. highway network spans over 3,600 miles, connecting cities, towns, and rural areas across the state. These highways form an essential part of the national road system, supporting commerce, travel, and daily commuting.
Key U.S. Highways in Indiana
U.S. 31
U.S. 31 is a major north-south route stretching 266 miles through Indiana. It connects the Michigan border near South Bend to the Kentucky border near Jeffersonville, serving cities like Indianapolis and facilitating regional trade.
U.S. 41
Spanning 281 miles, U.S. 41 runs through western Indiana, linking Evansville to Hammond. This route is critical for agricultural and industrial transport in the state.
U.S. 30
U.S. 30 is an important east-west corridor, covering 153 miles across northern Indiana. It connects Fort Wayne to Valparaiso and provides access to the Chicago metropolitan area.
Economic and Transportation Importance
Indiana's U.S. highways support the movement of millions of tons of freight annually. They play a vital role in connecting rural areas to urban centers and facilitating interstate commerce, reinforcing Indiana's reputation as the "Crossroads of America."
Infrastructure Maintenance
The state continually invests in maintaining and upgrading U.S. highways to ensure safety and efficiency. Projects include pavement repairs, bridge upgrades, and improved signage to accommodate growing traffic demands.
List of U.S. Highways
U.S. Highway
Length (miles)
Route Description
Key Cities Connected
Year Established
U.S. 6
149
Runs east-west across northern Indiana, connecting the Ohio border near Butler to the Illinois border near Munster.
Butler, Kendallville, Nappanee, Munster
1926
U.S. 12
45
Parallels Lake Michigan in northwest Indiana, connecting Michigan City to Chicago, Illinois.
Michigan City, Gary
1926
U.S. 20
141
Spans northern Indiana from the Ohio border to the Illinois border near Hammond.
Elkhart, South Bend, Gary
1926
U.S. 24
164
Runs from the Ohio border near Huntington to the Illinois border near Kentland.
Huntington, Logansport, Kentland
1926
U.S. 30
153
A major east-west route crossing Indiana, connecting the Ohio border near Fort Wayne to the Illinois border near Dyer.
Fort Wayne, Warsaw, Valparaiso
1926
U.S. 31
266
Travels north-south across Indiana, connecting the Michigan border near South Bend to the Kentucky border near Jeffersonville.
South Bend, Indianapolis, Jeffersonville
1926
U.S. 35
175
Runs diagonally from the Michigan border near La Porte to the Ohio border near Richmond.
La Porte, Kokomo, Richmond
1926
U.S. 40
156
Follows the historic National Road, crossing Indiana from the Ohio border near Richmond to the Illinois border near Terre Haute.
Richmond, Indianapolis, Terre Haute
1926
U.S. 41
281
Travels north-south through western Indiana, connecting the Illinois border near Hammond to the Kentucky border near Evansville.
Hammond, Terre Haute, Evansville
1926
U.S. 50
171
Runs east-west through southern Indiana, connecting the Ohio border near Lawrenceburg to the Illinois border near Vincennes.
Lawrenceburg, Seymour, Vincennes
1926
U.S. 52
171
Runs diagonally across Indiana, connecting the Ohio border near West Harrison to the Illinois border near Kentland.
Indianapolis, Lafayette, West Lafayette
1926
U.S. 231
297
A north-south highway traversing the state from the Kentucky border near Rockport to the Illinois border near Crown Point.
Rockport, Crawfordsville, Crown Point
1926
U.S. 421
206
Runs from the Michigan border near Michigan City to the Kentucky border near Madison.
Michigan City, Delphi, Madison
1926
Special Routes
Special Route
Parent Highway
Length (miles)
Route Type
Route Description
Key Cities Connected
Year Established
U.S. 31 Business (South Bend)
U.S. 31
8
Business Route
Provides access to downtown South Bend, running parallel to the main U.S. 31 bypass.
South Bend
1960
U.S. 41 Alternate (Terre Haute)
U.S. 41
5
Alternate Route
Bypasses the downtown area of Terre Haute, offering an alternate north-south connection.
Terre Haute
1940
U.S. 30 Business (Fort Wayne)
U.S. 30
10
Business Route
Runs through Fort Wayne, providing direct access to local businesses and city roads.
Fort Wayne
1958
U.S. 40 Historic National Road
U.S. 40
156
Historic Route
Follows the original path of the National Road, preserving historical significance and scenic access.
Richmond, Indianapolis, Terre Haute
1983
U.S. 50 Business (Seymour)
U.S. 50
6
Business Route
Provides access to downtown Seymour, running parallel to the main U.S. 50 bypass.
Seymour
1965
U.S. 231 Truck Route (Crawfordsville)
U.S. 231
4
Truck Route
Diverts heavy truck traffic away from downtown Crawfordsville to reduce congestion.
Crawfordsville
1990
U.S. 421 Alternate (Madison)
U.S. 421
3
Alternate Route
Bypasses the downtown area of Madison, providing a faster north-south connection.
Madison
1975
Indiana Highway System
Indiana's highway system is an integral part of the state's transportation infrastructure, with over 11,000 miles of roadways. Known as the "Crossroads of America," the network connects major cities, rural areas, and neighboring states, making Indiana a critical hub for commerce and travel in the Midwest. The system includes interstate highways, U.S. highways, and state roads, facilitating efficient transportation for freight, passengers, and local commuters.
Interstate Highways
Indiana's interstate highways are designed to support both regional and national connectivity. The state features 14 primary interstates and several auxiliary routes, covering approximately 1,200 miles. These highways serve as vital corridors, linking Indiana to major metropolitan areas like Chicago, Louisville, and Cincinnati. They also provide efficient routes for cross-country travel, with key interstates like I-65 and I-70 intersecting in Indianapolis. Additionally, the Indiana Toll Road in the northern part of the state facilitates trade and transportation across the Midwest. The state continually invests in maintaining these routes, ensuring safe and efficient travel for both commercial and personal use.
U.S. Highways
The U.S. highway system in Indiana complements the interstates by connecting smaller cities, towns, and rural areas to larger urban centers. These highways play a significant role in facilitating local commerce and travel. U.S. highways in Indiana also serve as critical routes for agricultural and industrial transport, supporting the state's economy. For example, U.S. 31 connects northern and southern parts of the state, while U.S. 41 provides access to western regions.
Economic and Strategic Importance
Indiana's highway system is a cornerstone of its economy, supporting the movement of millions of tons of freight annually. The strategic location of the state ensures seamless connections to regional and national supply chains. Highways like I-65 and I-70 provide essential links to ports, manufacturing hubs, and distribution centers. The infrastructure also supports tourism by providing convenient access to landmarks, cities, and recreational areas.
Infrastructure Maintenance and Development
Indiana continuously invests in upgrading and maintaining its highway network to meet growing traffic demands. Projects focus on expanding capacity, repairing aging infrastructure, and implementing advanced traffic management systems. These efforts aim to enhance safety, reduce congestion, and accommodate economic growth while preserving the state's position as a transportation leader in the region.
