April 16, 1963, Pennsylvania wanted to renumber its Interstate numbers. Part of this was the renumbering from I-80S into I-76 and all of its auxiliary routes into I-X76. The Federal Highway Administration (FHWA) approved the request on February 26, 1964. As a result, I-80S became I-76 and I-680 became I-676. In 1972, the I-76 and the I-676 designations were switched onto their current routes. The remainder of the New Jersey portion of I-676 between Morgan Boulevard and US 30 was completed by the 1980s. There were several challenges in building the Vine Street Expressway between 18th Street and the Benjamin Franklin Bridge. The road was to run through developed areas of Philadelphia, intersecting several streets and railroad lines. The Chinatown community organized in opposition to the highway construction through their neighborhood. In addition, the route was to run through Franklin Square, a historically sensitive site, to connect to the Benjamin Franklin Bridge. As a result, the routing was modified in 1966 to avoid many of these obstacles. The route was to avoid running through Franklin Square, leading to the eastbound direction using surface streets to access the Benjamin Franklin Bridge, and a planned connector to Market Street was removed. In the 1970s, the proposed freeway's environmental impact statement (EIS) had to be evaluated again per new guidelines; when the new EIS was issued in 1977, it was found that more improvements were needed for mass transit in the area of the planned freeway. To comply with this, provisions were made concerning the proposed underground Center City Commuter Connection for SEPTA Regional Rail, in which the railroad tracks would pass under I-676 and residences would be built over the railroad tunnel in Chinatown. Construction was approved in 1986 on the Vine Street Expressway from 18th Street to the Benjamin Franklin Bridge, with no provisions for elevated connections between the Benjamin Franklin Bridge and the Vine Street Expressway to avoid disturbing Franklin Square. This portion of the Vine Street Expressway opened to traffic on January 10, 1991, completing I-676. On April 14, 2015, the Pennsylvania Department of Transportation (PennDOT) began work to rebuild seven existing overpasses on the Vine Street Expressway portion of I-676. The project, which cost $64.8 million (equivalent to $ in ), was to be completed in late 2019. Since 2021, the new overpasses started to have traffic. After the remnants of Hurricane Ida passed through the area on