The route traverses the rural area north of and parallel to Interstate 10 (I-10) and U.S. Highway 90 (US 90) between Jennings and Lafayette.

Otherwise, LA 98 largely passes through small rural communities, such as Iota, Maxie, Roberts Cove, and Mire.

Rather the terminating in the center of Carencro, the current route passes through an interchange with I-49/US 167 south of town and extends eastward to what was formerly LA 354.

About 0.5 miles (0.80 km) beyond the local high school, LA 98 turns due east onto St. Joseph Avenue and heads out of town.

For the next 11 miles (18 km), the highway takes a winding course southeastward through Roberts Cove and into the city of Rayne.

[2][3][4] Shortly after exiting the Rayne city limits, LA 98 turns north onto Grand Prairie Highway and crosses back over I-10 without intersecting it.

The highway has a brief concurrency with LA 343 that ends at a T-intersection marking the boundary of three parishes: Acadia, Lafayette, and St.

The rural portions of the route generally averaged less than 3,000 vehicles daily with a low of 970 reported between Maxie and Roberts Cove.

[19] La DOTD is currently engaged in a program that aims to transfer about 5,000 miles (8,000 km) of state-owned roadways to local governments over the next several years.

[20] Under this plan of "right-sizing" the state highway system, most of LA 98 is proposed for deletion as it no longer meets a significant interurban travel function.

[21] As of 2017, the portion in Rayne from LA 35 to Llama Road is under agreement to be removed from the state highway system and transferred to local control.