Interstate 680 (Nebraska–Iowa)

at sunrise I-680 begins at a complex interchange with I-80 in Omaha. Due to the proximity of the West Center Road interchange on I-680 and the I, L, and Q street interchanges on I-80, all the exit and entrance ramps which connect I-80 to I-680 also connect to West Center Road and I, L, and Q streets. The freeway heads north through the heart of West Omaha; it serves as a dividing line of several residential neighborhoods. north of West Center Road, which, prior to 2003, was Nebraska Highway 38 (N-38), is a new interchange with US Route 6 (US 6), known as Dodge Street in Omaha. I-680 crosses over N-36, which is accessed via the US 75 interchange later. US 75 runs adjacent to I-680 for before turning south at 30th Street. In Iowa, I-680 is markedly less urban than in Nebraska. The first of I-680 travel through the flat bottoms of the Missouri River valley. I-680 ends at an interchange with I-29 just west of Crescent. ==History==

In Nebraska, plans for I-280 to bypass Omaha to the north to I-29 were drawn up in the late 1950s. At the same time, plans were being drawn up for an I-280 to bypass the Quad Cities. Since two Interstates cannot have the same designation in the same state, one of the I-280s had to be renumbered. The Omaha I-280 was redesignated as I-680 around 1965. In Iowa, I-80N opened to traffic on December 13, 1966. By 1974, I-80N had been redesignated to I-680 to match Nebraska. The last piece of I-680 to be completed in Nebraska was the westbound bridge across the Missouri River. Paving in Iowa wrapped up in the years to come and the entire route was open to traffic by April 21, 1979. A week later, water was diverted and drained from the area around the northern I-29 interchange to allow traffic to use the roads. I-680 was opened from the interchange to the Beebeetown exit and I-29 was reopened from the interchange to the US 30 exit at Missouri Valley. I-29 traffic was routed around the flooded area by using I-680 eastbound to I-80 westbound to Council Bluffs. After floodwaters receded and the damage was assessed, sections of I-680 were reopened to traffic. However, the section west of I-29 was the most heavily damaged and it remained closed. Contract bids were let on September 23, and reconstruction began on September 28. Construction crews worked at "an accelerated pace" to complete the road in 34 days. The road was officially reopened on November 2 during a ceremony in Crescent hosted by Governor Terry Branstad. 2019 flooding Iowa DOT closed I-680 for three separate periods during the 2019 floods: 2019 renumbering Due to I-29 and I-680 being subjected to flooding from the adjacent Missouri River, Iowa DOT officials sought to reduce confusion among drivers who were forced to use I-680 and I-80 as a detour around floodwaters. They proposed to AASHTO to rename the section of I-680 from Loveland to Neola, Iowa as I-880. The plan was approved on October 5, 2019. I-880 follows the same routing that I-80N had 50 years earlier. Iowa DOT updated its online maps and announced that the signage would be changed just weeks after the official approval by AASHTO. I-680 was shortened to its current length by removing I-680 from concurrent section of I-29/680 between Crescent and Loveland in May 2020. 2024 flooding Due to excessive rainfall in the Siouxland area upstream of Omaha/Council Bluffs, flooding of the Missouri River caused Iowa DOT to close I-29 and I-680, starting at 1am on Wednesday, June 26, 2024. Iowa DOT re-opened I-29 and I-680 with limited lanes at 6pm on Wednesday, July 3. All lanes and all ramps opened at 7:30am on Friday, July 12. ==Exit list==