NY 952Q begins at the Buffalo city line, picking up Walden Avenue's urban, residential setting. The street heads east through the town of Cheektowaga to an intersection with Harlem Road, where Walden Avenue widens from two to four lanes and takes on a suburban commercial setting. Here, the homes that had lined the street are replaced with shopping centers and stores. It continues generally eastward past smaller commercial establishments to New York State Thruway exit 52, where the highway widens to six lanes in advance of the sprawling Walden Galleria shopping mall, located adjacent to the northeastern corner of the interchange. Walden Avenue remains a six-lane road for a considerable distance past the mall, meeting Union Road and Dick Road while serving a continuous line of businesses. The commercial strip ends east of the Thruway in the Depewvillage limits, at which point the road narrows to four lanes as it passes under a branch line leading from the nearby main line of the CSX Transportation. Walden Avenue comes close to the main line tracks here, but it gradually moves away from the railroad as it enters a commercial and residential area of Cheektowaga. Here, the road makes a slight turn to the northeast, beginning a linear stretch that ultimately takes Walden Avenue out of the Buffalo suburbs. The road's surroundings remain mixed through its intersection with Transit Road north of Depew's village center. After Transit Road, Walden Avenue enters the town of Lancaster and crosses the northern fringe of the village of Lancaster, connecting to Central Avenue, the village's main north–south street. East of the village of Lancaster, the development along Walden Avenue begins to taper off as the constant homes and businesses slowly give way to large stretches of wooded areas. Still, the highway initially passes several cul-de-sacs leading away from the northern side of the road and a number of industrial buildings situated adjacent to the CSX mainline, here designated as the Rochester Subdivision line. This trend changes again after just as the isolated homes on the north side are supplanted by equally isolated industrial warehouses. Walden Avenue eventually follows the CSX mainline into the town of Alden, where development drops off even further. It passes north of the Wende Correctional Facility and serves a small number of commercial and industrial complexes on its way to an intersection with Genesee Street. Walden Avenue and NY 952Q end here, while NY 33 continues onto the straight route as Genesee Street.
History
The section of Walden Avenue between the Buffalo city line and NY 33 in Alden was originally a county road maintained by Erie County. On April 1, 1980, ownership and maintenance of the road was transferred to the state of New York as part of a highway maintenance swap between the two levels of government. The new, state highway was subsequently designated as the unsigned NY 952Q. The route is the longest reference route in the state that is not associated with a parkway.