345) is a north–south state highway in Baxter County, Arkansas.

It first heads south on Cotter Road crossing a railroad at-grade.

It runs northeast through the southern part of Cotter paralleling the White River before zig-zagging its way north when it enters Gassville and terminates at US 62/US 412.

The segment was created on May 23, 1973 pursuant to Act 9 of 1973 by the Arkansas General Assembly.

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