Despite major opposition to the 10-D System, the initiation of federal funding allowed the city to start acquiring property in the Franklin–Mulberry corridor in 1966 to clear the way for construction of I-70 and later I-170. Highway construction was underway by 1975 with the construction of Fulton Avenue's bridge over I-170. The freeway's interchange with Martin Luther King Jr. Boulevard was underway in 1979. The freeway was completed and signed as I-170 by 1981, by which time Martin Luther King Jr. Boulevard was also completed. The I-170 designation was gone by 1985; the freeway later became part of US 40.