U.S. Route 136 is an east-west U.S. highway that is a spur route of U.S. Route 36. It runs from Edison, Nebraska, at U.S. Route 6 and U.S. Route 34 to the Interstate 74/Interstate 465 interchange in Speedway, Indiana. This is a distance of . US 136 never meets its parent, US 36; however, it does come within two miles of it at its interchange with I-465/I-74 at its eastern terminus. Route description U.S. 136 passes through the following states: Nebraska U.S. 136 closely parallels Nebraska's southern border from its western terminus near Edison to the Missouri River. It passes through Beatrice and exits the state at Brownville via the Brownville Bridge. It is designated the Heritage Highway throughout Nebraska. Missouri US 136 enters Missouri on the west just east of Brownville, Nebraska, over the Missouri River. It leaves the state at Alexandria on the east, running concurrently with US 61. During its journey, it enters every county seat in the nine counties it traverses. The distance across Missouri is approximately . US 136 is two lanes over its entire course through Missouri. Iowa US 136 in Iowa consists of a route which travels across the south-easternmost tip of Lee County. It crosses the Des Moines River from Missouri with US 61, overlapping for just over . East of the US 61 split, US 136 is overlapped by US 61 Bus. through Keokuk. US 136 enters Keokuk along 7th Street, which takes a turn to the northeast towards downtown. At the intersection with Main Street, which is the southern end of US 218, it turns to the southeast towards the Mississippi River. US 136 travels another before crossing the Mississippi into Hamilton, Illinois via the Keokuk–Hamilton Bridge. Illinois US 136 spends within the state of Illinois. It crosses the Mississippi River into Illinois from Iowa just past Keokuk. It passes through historic Carthage; site of the death of Joseph Smith, founder of the Latter Day Saint movement and home of the Kibbe biological museum, then Macomb, where Western Illinois University is located. It continues as an east–west route intersecting with I-155 and I-55 south of Bloomington-Normal and north of Lincoln in Central Illinois. It later intersects with I-74, and then I-57 just outside Rantoul, approximately north of Champaign-Urbana. US 136 then travels concurrently with Illinois Route 1 in far east central Illinois before entering Danville. At Danville, it turns east