| State: | AR |
| Type: | AR |
| Route: | 331 |
| Maint: | AHTD |
| Map: | Arkansas 331.png |
| Length Mi: | 5.28 |
| Length Round: | 1 |
| Length Ref: | [1] |
| Established: | 1971 |
| Direction A: | South |
| Terminus A: | , Pottsville |
| Junction: | , Russellville |
| Direction B: | North |
| Terminus B: | Bradley Cove Rd |
| Counties: | Pope |
| Previous Type: | AR |
| Previous Route: | 330 |
| Next Type: | AR |
| Next Route: | 332 |
Arkansas Highway 331 is a north–south state highway in Pope County, Arkansas. The route runs 5.28miles from Arkansas Highway 247 in Pottsville north across Interstate 40 to terminate at the northbound ramps.[2]
The route begins at AR 247 in Pottsville, and runs west to the Russellville Regional Airport. The route turns north, intersecting AR 980 before forming a concurrency with US 64. After the concurrency ends, AR 331 continues north to cross over Interstate 40 at exit 84. The route terminates after serving the northbound ramps to I-40. The route continues as Bradley Cove Rd. The route is two-lane undivided south of the US 64 concurrency. Main Street is a five-lane road with a center left turn lane, and AR 331 is four-lane north of US 64.
The route was first added to the state highway system in 1971.[3] The route was only from US 64 to I-40 until 1974, when AR 331 was extended south to the area around the airport.[4] The route was extended again in 1975, across the railroad tracks to AR 274 in Pottsville.[5] The route south of I-40 was repaved in 1994.
Mile markers reset at concurrencies.|-| align=center colspan=4 | concurrency east, 0.5miles|-