Added US 218 to route for Washington Street south of I-380.
Changed Iowa Highway 57 to its correct alignment.
Corrected University Avenue's unsigned Iowa highway number from 946 to 934.
Added the bus transfer "station" near 6th and Iowa Streets.
Edited US 20 Bridge in Farley to trunk road.
Made more of U.S. 20 into a trunk road since this section is an expressway, not a freeway.
Turned U.S. 20 into a trunk road since this part of it is actually an expressway, not a freeway.