Henry Avenue runs parallel to Ridge Avenue from the border of East Falls and North Philadelphia, to Andorra where it merges into Ridge Avenue. Constructed in the 1930s, it was extended in 1959 from Roxborough Avenue to Andorra, and includes several concrete arch bridges. One of these bridges, the Wissahickon Memorial Bridge which crosses over the Wissahickon Creek and Lincoln Drive, includes a pair of box tunnels under the roadway designed to carry a never built extension of the Broad Street Subway into Roxborough.