State Highway 89 begins at the Taovayas Indian Bridge[2] on the Illinois Bend of the Red River, continuing Farm to Market Road 677 from Texas.

[1] SH-89 overlaps SH-32 for 6.1 miles (9.8 km),[1] initially headed due west, but curving around to the northwest and eventually the north, crossing into Jefferson County and passing through unincorporated Petersburg.

The highway comes to an end 9.8 miles (15.8 km) north of Ringling at SH-53 east of Loco.

[4] These remained the route's termini until January 21, 1957, when it was extended north through Ringling to SH-53, setting its northern terminus at its present location.

SH-89 now overlapped SH-32 to Courtney, where it split away towards its new southern terminus at the Texas state line.