Around the same time that NY 93 was rerouted , NY 270 was also extended northward along Junction Road from NY 31 to US 104 . As a result , NY 93 overlapped NY 270 between Lower Mountain Road and US 104 . The overlap with NY 270 remained in place until c . 1963 when NY 270 was truncated southward to the intersection of Lower Mountain and Junction roads . NY 93 was realigned in the late 1970s to bypass Lower Mountain and Gothic Hill Roads on Junction and Upper Mountain roads , replacing NY 270 along Junction Road . The Lower Mountain Road portion of NY 93 's former routing is now maintained by Niagara County as County Route 902 ( CR 902 ) .