The inscriptions include: N.D., S.D., and 190 M (the distance between Fargo, ND and Brookings, SD along Interstate 29).
The three cities have shown they value the I-29 rivalries that exist in that they have followed one another through multiple leagues to stay in competition.
U.S. Highway 77 is a north-south highway whose northern terminus is at Interstate 29 in Sioux City.
Interstate 75 | Interstate 90 | Interstate 5 | Interstate 94 | Interstate 81 | Interstate 80 | Interstate 70 | Interstate 40 | Interstate 95 | Interstate 10 | Interstate 65 | Interstate 64 | Interstate 44 | Interstate 90 in Minnesota | Interstate 71 | Interstate 35 | Interstate 15 | Interstate 476 | Interstate 78 | Interstate Highway System | Interstate 85 | Interstate 74 | Interstate 294 | Interstate 20 | Interstate Commerce Commission | Interstate 87 | Interstate 55 | Interstate 471 | Interstate 287 | Interstate matches in Australian rules football |
It followed the current Interstate 29 corridor up to the Toronto, South Dakota area, and then followed current South Dakota Highway 15 north to Milbank, South Dakota.