SR-280 connects Interstate 80 (I-80) in Coalville to Main Street in the same town.

SR-280 enters downtown Coalville and terminates on Main Street.

[2] Prior to the construction of I-80, SR-4 (US-189) passed through Coalville on Main Street.

[3] Before serving its intended purpose, the road briefly formed part of SR-2 (which had replaced SR-4 in 1962) and US-189, since I-80 was completed west of SR-280 before the portion east to Echo opened.

A temporary ramp left the right side of SR-280 where the ramp to I-80 east now begins, and curved left into the westbound lanes of I-80 just before the Interstate crosses under SR-280.