Construction Status: Summer 2018

SB Bridge Repairs Underway

Summer 2018 — Reconstruction of the outer half of the northbound U.S. 202 bridge over Amtrak at the U.S. 30/Exton Bypass Interchange has finished and work is now underway on the southbound side while replacement of the deteriorated concrete pavement on the ramp from eastbound Bypass to U.S. 202 north is expected to wrap up this fall.

Crews completed work on the northbound U.S. 202 bridge in mid-July. Crews then shifted the temporary barrier on the rebuilt span and reconfigured the crossovers on both sides of the bridge to set up a traffic shift that placed one lane of southbound traffic onto the northbound bridge. The shift marked the completion of northbound bridge work and the start of repairs on the southbound structure.

The new traffic pattern splits southbound traffic approaching the bridge, with the southbound inside lane shifting into a barrier protected “express lane" on the refurbished northbound bridge. The outside southbound lane remains on the southbound side, allowing repairs and re-decking to be begin a half-at-a-time on the southbound bridge.

After removing the deck from half the southbound bridge, work will get underway to refurbish, clean and repaint the steel deck beams and related structural components prior to constructing the new deck.

Since starting work in spring 2017 on the $26.4 million project, workers have repaired and re-decked the northbound bridge and begun replacing the deteriorated concrete from the U.S. 30/Exton Bypass off and on-ramps at the U.S. 202 Interchange.

As rehabilitation and re-decking get underway on the southbound overpass, crews will continue replacing the deteriorated concrete pavement from the two-lane ramp from U.S. 30/Exton Bypass to U.S. 202 north. The ramp is reduced to one-lane until the concrete pavement on both lanes of the ramp is replaced this fall.

Replacement of the concrete pavement on the two-lane ramp from southbound U.S. 202 to U.S. 30 finished in late spring.

PennDOT is replacing the ramp concrete after discovering that the original concrete, placed during construction of the Exton Bypass during the mid-1990s, was deteriorating due to a chemical reaction between the concrete’s sand and cement known by engineers as ASR (alkali-silica reaction). 

Construction also continues on Dunwoody Drive below the bridge to replace the retaining wall that supports the bridge's southern abutments. Repairs also are being made to the Morstein Road bridge over U.S. 202 located south of the U.S. 30 interchange. This bridge is scheduled to close for deck repairs in July and August.

The bridge and ramp repairs will complete the final phase of the U.S. 202 Section 300 improvement project in East Whiteland and West Whiteland townships, Chester County.

The bridge and ramp repairs are scheduled for completion in late 2019. Allan A. Myers Construction, of Worcester, PA, is the general contractor on the 100 percent federally-funded project.