the replacement of around 488 signs in eliminating . The number 76 has an association with 1876, the year Colorado was admitted as a state. Nebraska renumbered its existing Nebraska Highway 76 (N-76) to N-53 as a result. I-76 was conceived in August 1958. The Colorado portion was planned and built first. In December 1969, the Nebraska Department of Roads (NDOR) worked together with the Colorado Department of Highways to open a route connecting I-80 with the rest of I-80S in Colorado. The original western terminus of I-76 was at I-25, as planned. The western extension to I-70 was built in the late 1980s and early 1990s. By its completion in November 2002, the total cost was about $45.5 million (equivalent to $ in ). In 1968, I-25 and US 85 were open to the general traffic to the Denver vicinity after all the structures located throughout the route were completed, as well as meeting the criteria of the Interstate standards. Structures connected several interchanges; each one connecting I-270, US 85, Dahlia Street, Washington Street, 74th Avenue, and York Street. The completion also included structures in which each cross the Burlington Canal, Platte River, and Union Pacific Railroad. By October 24, 1970, the route was open to traffic from Sedgwick to Julesburg, as well as the completion of the route, connecting from its western terminus of I-25 in Colorado to its eastern terminus at I-80 near Big Springs, Nebraska. Beginning in 1990, were planned and constructed west of I-25. By October 2002, all of I-76 was open, and the highway reached its current western terminus at I-70 in Arvada. Exit list Business routes Keenesburg Interstate 76 Business (I-76 Bus) is an unsigned business spur that connects Keenesburg, Colorado, in Weld County to the Interstate. Inventoried by the Colorado Department of Transportation (CDOT), the route begins at the I-76 frontage road (County Road 398) within the town limits and heads north as Market Street. The route terminates north of I-76 exit 39. Major intersections Fort Morgan–Sterling Interstate 76 Business (I-76 Bus) is a business route of I-76 serving Fort Morgan, Colorado, and adjacent areas to Sterling in Morgan and Logan counties. This route is the longest continuously signed Interstate business loop in the system. It begins at exit 75 at I-76 west of Fort Morgan. The route overlaps US 34 and SH 52 heading east and becomes W Platte Avenue. After