route indiana route indiana main east west highway parallel western terminus illinois state line eastern terminus ohio state line concurrent twice route varies way lane lane streets northwestern indiana east west lane undivided highway route heads west south sides lane limited access divided highway east county road lane rural highway illinois state line concurrent started paved section highway known section later renamed began signing went downtown built parkway completed route open traffic called small realignment roadway straightened small included route followed route description segment concurrent included national_highway_system network highways identified important economy mobility defense nation highway maintained like state department tracks traffic volumes state highways maintenance responsibilities metric called average annual daily traffic aadt measurement calculation traffic level segment roadway average day year figured lowest traffic levels vehicles commercial vehicles highway daily near ohio state line peak traffic volumes vehicles commercial vehicles aadt section concurrent illinois south bend enters indiana point passes road passes commercial industrial areas wolf lake casino concurrent turns south avenue head southeast turns east continues south meets state road passes turns left michigan street heads east passing industrial residential way interchange interchange road changes 5th avenue west concurrency concurrent bridge street vermont street eastbound traffic 5th avenue westbound traffic 4th avenue east downtown eastbound westbound lanes merge form reaching neighborhoods northeastern interchange interstate indiana toll road shortly leaves northeast heads east northeast forming major retail corridor neighborhoods route meets northern terminus near boundary lake station west road passes route intersections road enters burns harbor interchanges south route heads northeast intersects route heads east route heads east northeast east route interchange followed intersection northern terminus route lane undivided highway passing east rolling prairie route meets heads northeast east heads east route passes new south bend ohio west heads continuing south runs west route turns east having cloverleaf interchange south downtown south miles concurrency road partial cloverleaf interchange near interchange old incomplete access westbound old eastbound soon interchange old interchange exit end joseph valley parkway heads east having intersection south bristol intersection road lane undivided highway soon intersection road lane highway route passes southwest south route traffic light route lane divided highway west intersection soon intersection road lane highway route heads east passing rural farmland eastern western way route passes intersection south route heads east downtown having intersection route heads east rural farmland eastern western route enters interchange road enters downtown passes north road heads downtown roundabout old going east route leaves heading east ohio rural eastern route passes farmland intersection northern terminus west ohio state line route passes history important road later renamed engineers envisioned state art foot wide concrete highway foot right way august commission director tentatively designated state road feet wide narrower anticipated new concrete highway superior indiana roads gravel dirt paved sections larger towns construction began guidance contractor construction engineer alignment current turned southeast current lincoln highway rerouted route illinois state line route named dunes highway time ohio state line signed indiana section illinois state line concurrent early 1930s illinois state line moved current route mid-1970s went southwest went downtown south bend state indiana built route downtown decommissioned series sharp curves rainbow lake removed curves located miles west new straight roadway built east east road west future plans lane highway center turn lane east end project different phases phase road phase phase final phase scheduled completion major intersections
U.S. Route 20 in Indiana