Interstate 95 in Pennsylvania - History

History

Plans for a limited-access highway along the Delaware River originated in 1932, as part of a proposed cars-only parkway system for the Philadelphia area similar to the contemporary system being built in New York City. However, planning for the proposed parkway system stalled and the plan was eventually abandoned. In 1937, plans for the highway were revived as the "Delaware Skyway", a planned elevated highway along the waterfront similar in design to the West Side Highway in New York, though these plans were also scrapped due to concerns that the supports would hinder access to port operations on the waterfront.

In 1945, the city approved the current routing as the Delaware Expressway, envisioned to link all the industrial areas along the river with the Industrial Highway and the Trenton-Morrisville Toll Bridge to New Jersey. The planned highway was incorporated into the Pennsylvania Turnpike system, and was planned to be built as a toll road. However, with the advent of the Interstate Highway System in 1956, the project was turned over to the Pennsylvania Department of Highways and incorporated into Interstate 95. Construction on the road commenced in 1959.

Original plans called for the expressway to follow the U.S. Route 13 corridor to the Trenton-Morrisville Toll Bridge, where I-95 would continue north along today's Trenton Freeway. However, due to limited capacity of the highway through Trenton, planners instead opted to build a new alignment bypassing Trenton to the west, incorporating the existing Scudder Falls Bridge.

Controversy erupted in the early 1960s over the planned eight-lane elevated segment of the highway along the Center City waterfront; residents of the upscale Society Hill neighborhood objected to the highway on the grounds that it would cut off the neighborhood from the river. State highway officials reached a compromise by opting for an alternative depressed design with an overhead concrete deck connecting Center City to a planned redeveloped waterfront today known as Penn's Landing. By 1979, the entire length of the expressway was open to traffic with the exception of a four-mile (6 km) segment near Philadelphia International Airport.

Completion of the final section of the highway faced considerable difficulty, as the road was to be built on a layer of clay separating the city's water supply from the output of its sewage treatment plant. Matters were complicated by a two-year suspension of federal highway funding while the state failed to implement a federally mandated emissions testing program. This final segment was opened to traffic in 1985, marking the completion of the 35-year project.

On March 18, 2008, two miles (3 km) of I-95 within Philadelphia were forced to be closed when PennDOT discovered large cracks in a support column underneath the highway. In order to prevent possible collapse, I-95 was closed between Exit 23 (Girard Avenue) and Exit 25 (Allegheny Avenue). PennDOT worked quickly to stiffen the support beams to allow the road to be raised off the column, using 16 jacks, early on March 20. PennDOT reopened the road shortly thereafter, and plans to replace the cracked column.