The location of I-95 in the Trenton area had not been finalized when the route was first designated. The BPR preferred using the Trenton Freeway (US 1 and Route 174), which was completed to Whitehead Road, but New Jersey and Pennsylvania proposed using the Scudder Falls Bridge and its approach (Route 129), opened in 1961 to Scotch Road, due in part to low design standards of the Trenton Freeway. As a result, I-95 was routed to use the Scudder Falls Bridge approach. The approach to the Scudder Falls Bridge was extended in 1974, northeast to the planned interchange with the new I-95 freeway, and then east to US 1 as I-295.