A DOT press release from last week announced the imminent opening of the US 63/IA 3 interchange (formerly a four-way stop) and some four-lane to the north. The release text would indicate that the four-lane is already open 3.6 miles north of that location, including through the IA 93 intersection. I can find no further details on the change.
With the opening of the interchange, the four-way stop at IA 9 is the last interruption for US 63 traffic between Airport Road on the north side of Waterloo and MN 16 in Spring Valley.
Once the work is finished between IA 3 and IA 93, 63 will have a 36-mile-long stretch of four-lane road from north of Waterloo to north of New Hampton.