 Route 28 is a state highway in the central part of New Jersey , United States that is 26 @.@ 44 mi ( 42 @.@ 55 km ) long . Its western terminus is at U.S. Route 22 in Bridgewater Township , Somerset County while its eastern terminus is at Route 27 in Elizabeth , Union County . From its western terminus , Route 28 heads east through Raritan , intersecting County Route 567 and then U.S. Route 202 and U.S. Route 206 at the Somerville Circle before heading through the central part of Somerville . Past Somerville , the route interchanges with Interstate 287 in Bridgewater Township before intersecting many 500 @-@ series county roads including County Route 525 and County Route 527 in Bound Brook , County Route 529 in Dunellen , Middlesex County , County Route 531 in Plainfield , Union County , and County Route 509 in Westfield . Route 28 continues east , intersecting Route 59 and the Garden State Parkway in Cranford before heading to Elizabeth , where it crosses Route 439 before ending at Route 27 . Route 28 is a two- to four @-@ lane road its entire length that passes through suburban areas and runs within a close distance of New Jersey Transit ’ s Raritan Valley Line for much of its length . 
