Route 29 crosses into West Amwell Township in Hunterdon County . It enters Lambertville , where Route 29 becomes a four @-@ lane divided highway . At the intersection of South Main Street , Route 29 becomes concurrent with Route 165 . The route becomes an undivided highway again and meets the western terminus of County Route 518 ( Brunswick Street ) . It meets Route 179 ( Bridge Street ) , where Route 165 ends and Route 29 turns west for a one @-@ block wrong @-@ way concurrency with the two @-@ lane , undivided Route 179 , lasting to the intersection of Main Street , where Route 29 turns north on Main Street .