mark, the road divides again for a short time. In between this divided stage, CR 531 merges in. 531 leaves as the highways merge again. Now in Union County, CR 527 has two partial interchanges with Interstate 78 as it skirts the Watchung Reservation. In the city of Summit, CR 527 and the easternmost section of CR 512 split into one-way pairs through an interchange with Route 24 and a concurrency with Route 124. CR 527 enters Essex County after the concurrency ends. CR 527 enters Millburn and splits into one-way pairs again, concurrent with CR 577 as it enters downtown. At , CR 577 leaves to the right. Just before , CR 510 crosses. The road passes by St. Barnabas Medical Center. At , CR 508 crosses at a traffic light as the route enters Livingston. New Jersey Route 10 crosses at and then I-280 crosses at . In Caldwell, CR 527 merges with CR 506 for about .62 of a mile (). CR 527 ends at an intersection with Route 23 in Cedar Grove. History From the New-East Brunswick Line to Old Bridge, the road was once maintained by the East Brunswick and New Brunswick Turnpike Company, chartered in 1865. It was once part of State Route S-24, now Route 18, though this was bypassed. The New Brunswick section of CR 527 was known as County Route 3R11 back in 1947. The parts south of that in Middlesex County was known as County Route 3R10. By 1954, the road was known as County Route 527, part of the 500-series county roads adopted by the state of New Jersey. Two former spur routes of CR 527 existed. The first CR 527 Spur in Somerset County ran along what is now Somerset CR 651, CR 512, and Somerset CR 613. The second CR 527 Spur ran along what is now Essex County Routes 608 and 649. Major intersections CR 527A County Route 527A (also known as County Route 527 Alternate or CR 527A) is a county highway in Monmouth County, New Jersey. The highway extends about from Sweetmans Lane (County Routes 527 and 1) in Carrs Corner, New Jersey, on the border of Millstone and Manalapan townships, following Woodville Road, Iron Ore Road, High Bridge Road, and South Main Street to Park Avenue / South Main Street in Englishtown. It crosses Route 33 about halfway between its two termini. The