Question: Blue Ridge Road is designated as County Route 84 between Interstate 87, New York State Route 910K and what other highway?

Context paragraphs:
Arizona State Route 84: State Route 84, also known as SR 84, is a 23 mi east–west highway in south-central Arizona, with its western terminus at Exit 151 of Interstate 8 and its eastern terminus at its junction with State Route 387 and State Route 287 in Casa Grande.  An orphaned and unsigned section runs along the final 0.87 mi of State Route 87 just north of Interstate 10 near Picacho.  Formerly, SR 84 ran between Tucson and Gila Bend, serving as the primary route for travelers to San Diego, California.

Saffold, Georgia: Saffold is an unincorporated community in Early County, Georgia, United States.  Its western boundary is the Chattahoochee River also bordering Gordon, Alabama.  U.S Route 84 and SR 370 pass through the community.  It is the only unincorporated city on U.S Route 84 that is near a smaller city.  It is located 20 miles south of Blakely, 21 miles northeast of Dothan, Alabama, five miles south of the Georgia-Pacific Cedar Springs Operations, and two miles northwest of Jakin.  It is a small unincorporated community near the Alabama state line.  At the Georgia state line, U.S Route 84 starts and ends with Saffold the only unincorporated community on the route.  Georgia State Route 370 is the first and last state route for SR 62 and U.S. Route 84.  In Christmas of 2015, a flood struck Saffold, Gordon, Hilton and Columbia, Alabama.

New Jersey Route 284: Route 284 is a 7.03-mile (11.31 km) state highway in New Jersey, United States, running from Route 23 in Sussex north to the New York state line in Wantage Township.  New York State Route 284 continues north to U.S. Route 6 at Slate Hill, New York.  The route is a connector to Unionville, and intersects with an old alignment of its original designation, Route 84.  Route 284 was first a part of Route 8 in the 1920s, becoming Route 8N in 1927 and Route 84 in 1942 before being assigned Route 284 in 1966.

New York State Route 28N: New York State Route 28N (NY 28N) is an east–west state highway in the North Country of New York in the United States.  It extends for 50.95 mi through the Adirondack Mountains from Blue Mountain Lake to North Creek.  The route is a northerly alternate route to NY 28 between both locations; as such, it passes through several communities that NY 28 bypasses to the south.  The westernmost 10 mi of NY 28N overlap with NY 30 through the town of Long Lake.  NY 28N and NY 30 split in the hamlet of Long Lake, from where NY 30 heads to the north and NY 28N proceeds eastward through mountainous regions of Adirondack Park.

New Jersey Route 17: Route 17 is a state highway in Bergen County, New Jersey, United States, that provides a major route from the George Washington Bridge, Lincoln Tunnel and other northeast New Jersey points to the New York State Thruway at Suffern, New York.  It runs 27.20 mi from Route 7/County Route 507 in North Arlington north to the New York border along Interstate 287 in Mahwah, where New York State Route 17 continues into New York.  Between Route 7 and Route 3 in Rutherford, Route 17 serves as a local road.  From Route 3 north to the junction with U.S. Route 46 in Hasbrouck Heights, the road is a suburban arterial with jughandles.  The portion of Route 17, from US 46 to Interstate 287 near the state line in Mahwah, is a limited-access road with all cross traffic handled by interchanges, and many driveways and side streets accessed from right-in/right-out ramps from the right lane.  For three miles (5 km) north of Route 4, well over a hundred retail stores and several large shopping malls line the route in the borough of Paramus.  The remainder of this portion of Route 17 features lighter suburban development.  The northernmost portion of Route 17 in Mahwah runs concurrent with Interstate 287 to the New York border.

New York State Route 456: New York State Route 456 (NY 456) was a short state highway located entirely within the town of Beekmantown in Clinton County, New York, in the United States.  The western terminus of the route was at an intersection with NY 22 by the community of Beekmantown (also called Beekmantown Corners) and the eastern terminus was at a junction with U.S. Route 9 (US 9) east of Interstate 87 (I-87) and west of Point Au Roche State Park.  NY 456 was assigned in the early 1970s and is maintained by the Clinton County Highway Department as County Route 58 (CR 58).  The route was decommissioned on March 18, 2015.

Hoffman Notch Wilderness Area: The Hoffman Notch Wilderness Area, an Adirondack Park unit of the Forest Preserve, lies in the towns of Schroon, North Hudson and Minerva in Essex County.  It is bounded on the north by private lands lying south of the Blue Ridge Road and the Sand Pond Mountain tract donated to the state by Finch, Pruyn and Company for fish and wildlife management and silvicultural research and experimentation purposes, on the east by Interstate 87 and private lands immediately west of the Northway, on the south by private lands lying north of the Loch Muller Road and on the west by the jeep road and trail that extends from Irishtown along Minerva Stream northward to the Blue Ridge Road near Cheney Pond.

Blue Ridge Road: Blue Ridge Road is a 19.2 mi long roadway in Essex County, New York, in the United States.  The road is designated as County Route 84 (CR 84) from NY 28N in Newcomb to Interstate 87 (I-87) in North Hudson, and as New York State Route 910K (NY 910K) between I-87 and U.S. Route 9 (US 9) in North Hudson.  The CR 84 portion is an 18 mi , two-lane stretch of rural highway maintained by the Essex County Department of Public Works' Highway Division while NY 910K is a 1 mi highway maintained by the New York State Department of Transportation (NYSDOT).  All of Blue Ridge Road has been designated as the "Blue Ridge Road Scenic Byway" by NYSDOT.

New York State Route 910D: New York State Route 910D (NY 910D) is an unsigned reference route designation for Washington Avenue Extension, a divided highway extension of Washington Avenue in Albany, New York, in the United States.  The state-maintained portion of the highway begins at an intersection with NY 155 (here county-maintained as County Route 157 or CR 157) and ends at CR 156 (Fuller Road).  Past Fuller Road, the highway is maintained by the city of Albany and known as Washington Avenue.  Washington Avenue Extension was constructed in the late 1960s and open to traffic by 1973.

New Jersey Route 23: Route 23 is a state highway in the northern part of New Jersey in the United States.  The route runs 52.63 mi from County Route 506 (Bloomfield Avenue) and County Route 577 (Prospect Avenue) in Verona, Essex County northwest to the border with New York at Montague Township in Sussex County, where the road continues to Port Jervis, New York as Orange County Route 15.  Route 23 heads through Essex and Passaic Counties as a suburban arterial varying from two to four lanes and becomes a six-lane freeway north of a complex interchange with U.S. Route 46 and Interstate 80 in Wayne.  The freeway carries Route 23 north to a concurrency with U.S. Route 202.  Past the freeway portion, the route heads northwest along the border of Morris and Passaic Counties as a four- to six-lane divided highway with a wide median at places, winding through mountainous areas and crossing Interstate 287 in Riverdale.  The route continues northwest through Sussex County as a mostly two-lane, undivided road that passes through farmland and woodland as well as the communities of Franklin, Hamburg, and Sussex before reaching the New York border just south of an interchange with Interstate 84 near High Point State Park.

Supporting paragraphs: Blue Ridge Road New York State Route 28N
Answer: New York State Route 28N