​Rock Hill Road & Belmont Avenue Improvements

Project Location

Overview

PennDOT in partnership with Lower Merion Township is advancing this project to improve Belmont Avenue from the interchange with I-76 to the south of Rock Hill Road and to improve the intersection of Conshohocken State Road (Route 23) and Rock Hill Road in Lower Merion Township, Montgomery County.  

The cartway for Belmont Avenue, roughly between the entrance to Westminster Cemetery and I-76, will be widened from two variable-width lanes to add a second northbound through lane, with turning lanes provided at the intersections with Rock Hill Road, Old Belmont Avenue, and the I-76 ramps. Rock Hill Road will be widened on the approach to the intersection with Conshohocken State Road (Route 23) to provide left-turn lanes and adequate turning radii. 

Conshohocken State Road will be widened for approximately 500 feet in each direction at its intersection with Rock Hill Road. The project will include the reconstruction of the roadway and drainage facilities throughout the project area, as well as adding new curbing, sidewalks, traffic signals, street lighting, and streetscape improvements along Belmont Avenue. The existing concrete arch bridge carrying Belmont Avenue over Gulley Run will be rehabilitated and widened. 

The bridge carrying the Norfolk Southern Railway’s Philadelphia to Harrisburg Main Line over Belmont Avenue will be removed and replaced with two longer, single-span structures to accommodate the widening of Belmont Avenue. As part of this bridge replacement, the vertical alignment of the tracks will be raised to improve the vertical clearance from 14’-0” to 16’-6 ½”. A portion of the existing Cynwyd Heritage Trail will be realigned to tie into the proposed improvements at the Rock Hill Road/Belmont Avenue intersection.