| State: | AR |
| Type: | AR |
| Route: | 4 |
| Map: | Arkansas 4.png |
| Established: | 1926 |
| Length Mi1: | 2.99 |
| Length Ref1: | [1] |
| Direction A1: | West |
| Direction B1: | East |
| Terminus B1: | at Cove |
| Length Mi2: | 22.49 |
| Direction A2: | West |
| Direction B2: | East |
| Terminus A2: | in McGehee |
| Terminus B2: | at Rohwer |
| Previous Type: | AR 1926 |
| Previous Route: | 3 |
| Next Type: | AR |
| Next Route: | 5 |
Highway 4 (AR 4, Ark. 4, and Hwy. 4) is a designation for two state highways in Arkansas. The western segment of 2.99miles runs from SH-4 at the Oklahoma state line and terminates in Cove.[2] An eastern segment of 22.49miles begins at U.S. Route 278 (US 278) in McGehee and heads east to Arkansas City then north to Highway 1 before terminating.[3] The two routes were formerly connected until a portion of approximately 230miles was redesignated US 278 in 1998. The eastern segment is part of the Great River Road.
The route enters Arkansas as Oklahoma State Highway 4 and runs east to Cove. The route then meets US 59/US 71 and ends.[2] AR 4 formerly continued along US 59/US 71 south to Wickes, then across the state along present US 278.
Highway 4 begins east of McGehee at US 65/US 165/US 278. The route winds east past the Delta Country Club and Trippe Holly Grove Cemetery before curving due east toward Arkansas City. The route runs east to Arkansas City. At Arkansas City, the route has its only spur route, which serves the historic part of town, while AR 4 turns north. The highway runs along the Mississippi River briefly before terminating at AR 1.[3]
| State: | AR |
| Route: | 4 |
| Type: | AR-Spur |
| Length Mi: | 1.04 |
| Length Round: | 2 |
| Location: | Arkansas City |
Arkansas Highway 4S is a spur of 1.04miles in Arkansas City.[3]
| State: | AR |
| Route: | 4 |
| Type: | AR-Bus |
| Length Mi: | 6.1 |
| Length Round: | 1 |
| Deleted: | 1998 |
| Formed: | May 28, 1976[4] |
| Location: | Camden |
Highway 4B was a business route of 2.97miles in Camden; it was renamed U.S. 278B in the 1998 redesignation. The route began on Washington Street near the Camden Country Club and terminated at U.S. 79B.[5]
Highway 4S was a spur route in Camden, following the under-construction bypass. The route was redesignated as Highway 4 in 1976.
| State: | AR |
| Route: | 4 |
| Type: | AR-Bus |
| Length Mi: | 3.8 |
| Length Round: | 1 |
| Deleted: | 1998 |
| Location: | Warren |
Highway 4B was a business route of 3.78miles in Warren; it was renamed U.S. 278B in the 1998 redesignation.