The three roads would be multiplexed from 38th and Fall Creek, to 38th and Northwestern Ave. (now Dr. MLK Jr. St.), then south along Northwestern Ave. and West St. until the above-mentioned location at Michigan and West Streets. In 1957, construction was started on the Noblesville Bypass of SR 37. This bypass was designed to go to the east side of Noblesville, through Fishers, and along a newly constructed road in Marion County to connect to Fall Creek Parkway just north of the then route of SR 37 (Allisonville Road). One of the "quirks" in the design of the new SR 37 was a five-point intersection with SR 100, at the corner of Shadeland Road (now Avenue) and 82nd Street. By 1958, SR 37's Noblesville bypass was completed to the JCT SR 100 from the north. SR 37 then was rerouted along 82nd St to Allisonville, where it turned south to connect to Fall Creek Parkway has it had for the previous 35 years. By 1959, the new route was completed, with the Allisonville Road route renumbered SR 37A. In the early to mid-1960s, two changes were made to SR 37. One which would eventually become part of I-69: interchanges were built at SR 100 and 116th St., as well as a connection to the under construction I-465. The second was the construction of an exit ramp (now Exit 4) on I-465 for the eventual construction of a Bluff Road bypass through southern Marion and northern Johnson Counties. In 1967, there were two SR 37s on the south side of Indianapolis: one along Bluff Road, one along the Bluff Road bypass. The two did not directly connect to each other at all. By 1969, SR 37 was multiplexed with US 31 (along Meridian, North, Pennsylvania/Delaware, Madison and East Streets) to I-465/I-74 at what is now Exit 2. The route then was multiplexed with I-465/I-74 between Exits 2 and 4. This made the Bluff Road route abandoned in its connections to the state road system, so it was decommissioned. Some unofficial maps list Bluff Road as SR 37A for some time after this, although the state of Indiana never recognized it as such. By 1972, I-69 was completed along the SR 37 corridor from I-465 to where it had ended to that point at the JCT SR 37 Noblesville bypass (now Exit 205). SR 37 stayed much the same until 1999