along the south bank of the canal. Today this is Metra's Heritage Corridor commuter line. In 1890 Summit was incorporated as a village. When John Wentworth, and his political influence, died in 1888 his heirs and the settlement residents feared being annexed by Chicago. The settlement was re-platted much as it is today, with Center St. going north from Archer Ave. and Lincoln St./Lawndale Ave. going northwest from Center St. over the canal. This area was changed with the construction of Interstate 55, which effectively replaced Lawndale Ave. with the Illinois Route 171 ramp. A housing complex was at the site of the 1836 settlement. Between 1892 and 1900 the Chicago Sanitary Canal was built. It was just north of the Illinois and Michigan Canal but was much larger. In 1899 a large center-pier swing steel bridge was built for Lawndale Ave., the only crossing for miles in either direction until the 1920s. In 1900 the Chicago Sanitary Canal opened and replaced the Illinois and Michigan Canal, which was abandoned. In Summit the old canal was filled in 1974. In 1901 the Chicago and Joliet Electric Railway Interurban was operating a double-track line down Archer Ave. To the east it connected with Chicago streetcars at Cicero Ave. (then the city limits), to the southwest it went past Argo and on to Joliet. A branch went north on Lawndale Ave to Ogden Ave. in Lyons. In 1933 the rail-cars were replaced with buses. In 1907 Corn Products Corp. (now Ingredion) began construction of the world's largest corn-processing plant south of Summit (Bedford Park today) in 1907. At the same time two properties, north and south of 63rd St., were sub-divided as a "company town" type neighborhood called "Argo" after the factory. In 1911 Summit annexed Argo but its separation by the Indiana Harbor Belt Railroad tracks at 59th St., dependence on the factory, and separate business district along 63rd St. with Chicago streetcar (later bus) service made it develop as a separate community. The name "Argo" is still in widespread use in both the public and private sectors. Between 1910 and 1920 the population of Summit more than tripled, from 949 to 4,019, and increased again to 6,548 in 1930. The nature of the village changed from rural to industrial, largely because of the Corn Products plant. Farms in the old section were sub-divided and the new Argo area was annexed