County, with the intention of alleviating traffic along Route 10. During planning for the Interstate Highway System in the 1950s, the Bureau of Public Roads proposed an Interstate Highway along Route 3, to the north of Newark. The New Jersey State Highway Department countered with the proposed Essex Freeway, which would run from I-80 to the New Jersey Turnpike (I-95) via the existing Route 58, saying that the Route 3 corridor "does not meet Interstate standards, and cannot be economically converted to such standards." The Essex Freeway was selected as the Interstate corridor, which was called FAI Corridor 105 before being designated I-280 in 1958. Construction progressed slowly, starting in 1960 near Orange. There were many obstacles that had to be overcome when constructing I-280. The first was whether to build the highway on an elevated or depressed alignment through urbanized areas of East Orange and Newark. Following opposition to the elevated option, it was decided to build I-280 on a depressed alignment through the area. In addition, there was an issue of building the road across First Watchung Mountain in West Orange. A tunnel had initially been considered, although the expense of such a project caused this alternative to be rejected. Instead, a rock cut along a longer route was built through the mountain. Much of the material that was excavated from this section of I-280 and east was removed via a temporary rail line that was built in the center of the right-of-way west to I-80. The construction of I-280 destroyed a large part of the historic urban cores of Orange, East Orange, and Newark, while providing a path for shoppers to head to shopping malls in surrounding suburban communities rather than shop in aging downtowns that had been disrupted by the highway construction. Many commercial buildings and historic Victorian homes in Orange and East Orange were demolished in the process. I-280 fully opened west from Newark to I-80 in Parsippany–Troy Hills in 1973. The portion of I-280 east of Newark was planned on an alignment that would disrupt the fewest homes and would utilize existing railroad and utility right-of-way. The section east from Newark to the New Jersey Turnpike was built in 1979–1980. In the 1966 plans, I-280 was to continue east to I-78 in Jersey City near the Holland Tunnel, following the CR 508 and Route 7 corridors; this was planned again in the 1970s but