of several freeways built over the preceding forty-five years. The earliest parts are its eastern and southern sections. The segment between US 22 in Colonial Park and US 422 on the site of the future Eisenhower Interchange opened in 1954, designated initially as part of Bypass US 230 (PA 230 after 1961). In 1960-61, I-83, the Baltimore-Harrisburg expressway, was extended east from Lemoyne, over the John Harris Bridge to Paxton St. in south Harrisburg. Also opened was a 4.5 mile freeway west from I-83 in Lemoyne to connect with US 15 in Camp Hill and US 11 in Hampden Township, where those highways were entering what was then the western edge of the metropolitan area. The new east-west freeway was called the Harrisburg Expressway. (Upon its opening, US 11 was rerouted to follow the Expressway from the Hampden terminus to Camp Hill, and thence up 32nd St to Market St. where it rejoined its old path. In 1992, the whole segment of the Expressway west of the York Split in Lemoyne was designated PA 581.) In 1968-71, I-83 was extended from Paxton Street east and north via the new Eisenhower Interchange. PA 230 to Colonial Park was redesignated I-83 and extended a mile further north to link with the new, temporary, southern terminus of I-81. In 1971-75, I-81 was built between Colonial Park and Carlisle, its final section in Pennsylvania to be completed. But I-81 on the west shore had no convenient connections with the Harrisburg Expressway which ran parallel five miles to its south. Indeed, for years the edge of the Harrisburg area inset on Pennsylvania highway maps ran no further west than Camp Hill and Enola, showing US 11-15 as the primary north–south route between the two highways on the west shore. Not until 1995 did work begin on the 3-mile section of PA 581 between the Harrisburg Expressway terminus and I-81 in the Good Hope area of Hampden Township. Engineering for the project was provided by Gannett Fleming and McCormick Taylor of Camp Hill. When it was opened for public use in 1997, the Capital Beltway designation was assigned to all its current components. On May 9, 2013, a tanker crashed and caught fire at the interchange between I-81 and US 22/US 322 in Harrisburg. The fire damaged the bridges carrying westbound US 22/US 322 and a ramp over I-81. At least one of those bridges, carrying