An agreement in 1985 led to many environmental compromises in the road's design, including a downsized four-lane design south of Pennsylvania Route 3 (although a part of the span between exits 9 and 5 has a third lane on the southbound side), ramp meters, and federal scenic route status, prohibiting the erection of advertisement billboards along the entire freeway portion. The Radnor Gateway Enhancement Strategy was implemented to install largescale sculpture elements by artist William P. Reimann, most notably the stone griffin and cairn at Exit 13. While the redesigned highway was largely well-received, the constriction to four lanes has led to bottleneck conditions in the area, and many communities that originally opposed the road have now called for its widening. "The Philadelphia Inquirer" dubbed I-476 "the most costly, most bitterly opposed highway in Pennsylvania history" due to the decades of opposition it garnered.