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| Indiana State Road 46 | |
|---|---|
| State | IN |
| Type | IN |
| Route | 46 |
| Length mi | 165.16 |
| Established | 1926 |
| Direction a | West |
| Terminus a | Vincennes |
| Direction b | East |
| Terminus b | Richmond |
| Counties | Knox County, Vermillion County, Parke County, Putnam County, Monroe County, Brown County, Jackson County, Bartholomew County, Decatur County, Rush County, Wayne County |
Indiana State Road 46 is an east–west state highway traversing central and eastern Indiana, connecting the Wabash Valley with the Ohio state line near Richmond. The route links historic communities, academic centers, and regional transportation corridors, serving as a principal connector between U.S. Route 41, U.S. Route 231, Interstate 69, and Interstate 70. SR 46 facilitates access to cultural and educational institutions and supports freight movement across Indiana's mixed urban and rural landscape.
State Road 46 begins near Vincennes at an intersection with U.S. Route 41 and proceeds eastward through the Wabash River vicinity and the historic George Rogers Clark National Historical Park corridor, passing near Vincennes University. Continuing, the highway traverses agricultural terrain in Vermillion County and enters the limestone country adjacent to Turkey Run State Park and Shades State Park, connecting with U.S. Route 41 and local arteries near Rockville and Crawfordsville. East of Greencastle the route provides an arterial link to Interstate 74 and Interstate 70 via spurs and concurrency with U.S. Route 231.
Near Bloomington SR 46 functions as a major urban thoroughfare around the Indiana University campus, intersecting with State Road 37 and offering access to Monroe Lake and Hoosier National Forest. Eastward, the highway traverses Brown County hills, skirts Nashville and connects to Columbus area corridors before progressing toward Rushville and Richmond, where it terminates at the state line linkage with U.S. Route 27/Indiana–Ohio State Line crossings and connections to Interstate 70.
The alignment originated from early 20th-century auto trails and state trunkline planning that sought links between key towns such as Vincennes, Bloomington, and Richmond. Designated in the 1926 state highway renumbering, the route replaced portions of earlier numbered routes and absorbed segments formerly identified with local turnpikes. Improvements through the New Deal era and post-World War II federal funding paralleled developments affecting U.S. Route 40 and U.S. Route 50, prompting pavement upgrades, bridge replacements over tributaries of the White River, and alignments to bypass downtown cores in communities like Greencastle and Crawfordsville.
In the latter 20th century, urbanization around Bloomington and the expansion of Indiana University produced demands for widening, grade separations, and truck route designations, paralleling statewide modernization projects such as the conversion of segments of Interstate 69 and improvements tied to U.S. Route 31. Historic preservation concerns around Brown County State Park and multiple National Register districts influenced routing decisions and interchange designs.
SR 46 intersects numerous federal and state routes that form part of Indiana's transportation network, including termini and concurrencies with U.S. Route 41, U.S. Route 231, U.S. Route 27, U.S. Route 150, U.S. Route 36, Interstate 69, Interstate 70, State Road 37, State Road 135, and connections near Interstate 74. Key junctions occur at Vincennes (western terminus), Bloomington (major urban interchange), and Richmond (eastern approaches to the Ohio River watershed and regional freight corridors). Numerous county road intersections provide access to sites such as Monroe County recreation areas and industrial parks near Columbus.
Planned investments reflect state and regional priorities including corridor safety upgrades, intersection reconfigurations, and targeted widening near Bloomington and growth areas in Greencastle-to-Columbus corridors. Projects in coordination with Indiana Department of Transportation programming seek to address pavement rehabilitation, bridge modernization adjacent to tributaries of the White River, and interchange enhancements for improved access to Interstate 69 and Interstate 70. Local governments in Brown County, Monroe County, and Wayne County are pursuing multimodal planning to integrate transit, pedestrian, and bicycle elements where SR 46 interfaces with downtown districts and campus zones.
Traffic volumes vary from rural low-density segments in Parke County and Vermillion County to high urban volumes around Bloomington and commuter corridors serving Columbus and Richmond. Freight movements utilize SR 46 as an east–west connector between agricultural shipping points near Vincennes and manufacturing centers along the I-70 corridor, intersecting logistics flows tied to Interstate 74 and regional rail yards in Richmond. Seasonal tourism traffic increases near Brown County State Park, Shades State Park, and Turkey Run State Park, affecting peak weekend operations and prompting demand for shoulder improvements and signage projects.
SR 46 interfaces with several auxiliary routes and numbered spurs, including truck designations and concurrencies with U.S. Route 231 and U.S. Route 41, as well as state-maintained connectors to Indiana University facilities and access roads to Monroe Lake. Nearby state routes such as State Road 45, State Road 57, and State Road 59 provide alternate north–south movements that complement SR 46's east–west function, while interchange ramps link to Interstate 69 and Interstate 70 for regional mobility.
Category:State highways in Indiana