In the U.S. state of Nebraska, U.S. Highway 34 is a highway which goes between the Colorado border west of Haigler to the Iowa border east of Plattsmouth. Between Culbertson and Hastings, U.S. 34 overlapsU.S. Highway 6. From Grand Island to Lincoln, U.S. 34 has been replaced by Interstate 80 as a high-speed corridor and mostly serves local traffic. On this portion of the highway, U.S. 34 is continuously north of Interstate 80. Within Lincoln, U.S. 34 runs concurrent with all of Interstate 180, and much of it follows O Street.
U.S. 34 and Nebraska Highway 2 continue east through the southern portion of Grand Island, where they briefly enter Merrick County while crossing the Platte River. The two highways end their overlap shortly after this crossing. U.S. 34 then continues east through Aurora and intersecting Nebraska Highway 14 there. It then passes through Hampton and Bradshaw before meeting U.S. Highway 81 in York. After passing through Waco, U.S. 34 then intersects Nebraska Highway 69. It then continues through Utica and Tamora before meeting Nebraska Highway 15 in Seward. U.S. 34 continues east and becomes a divided highway when it intersects Nebraska Highway 79.
U.S. 34 passes north of the Lincoln Airport as the Purple Heart Highway before it curves south towards downtown Lincoln and intersects with Interstate 80 and U.S. Highway 77. At I-80, a new overlap begins with Interstate 180, which overlaps U.S. 34 for its entire length to downtown. U.S. 34 then becomes a pair of one-way streets, North 9th Street and North 10th Streets, where Interstate 180 ends. U.S. 34 turns east on "O" Street in downtown Lincoln just a few blocks later.[1][3]
U.S. 34 was realigned onto a new divided highway northwest of Lincoln in late 1963, shortly after the opening of I-180, which was also incorporated into U.S. 34. The highway's former alignment was demolished to make way for an expansion of the Lincoln Air Force Base (now Lincoln Airport).[5] In 1997, this 4-mile (6.4 km) section of U.S. 34 was designated as the Purple Heart Highway.[6]
Prior to 2014, U.S. 34 entered Iowa at the Plattsmouth Bridge east of Plattsmouth.[1][3] A new bridge was built near La Platte and opened to traffic on October 22, 2014, bringing it more in line with the current U.S. 34 alignment near Glenwood, Iowa.[7][4]