U.S. Route 202 south - King of Prussia to Delaware line

Separate carriageways at the interchange between Interstate 76 and U.S. Route 202 in King of Prussia, Upper Merion Township in Montgomery County facilitate through movements on southbound US 202 toward West Chester and, at right on the opposite side of a concrete barrier, westbound U.S. Route 422 toward Pottstown. Photo taken 01-25-2025.

The speed limit is currently 55 miles per hour. Photo taken 01-25-2025.

Access to the parallel Swedesford Road and King of Prussia's Town Center is from the same carriageway as the ramp to US 422. Photo taken 01-25-2025.

US 202 passes under Warner Road prior to the US 422 split. This is the eastern terminus of the eastern iteration of US 422, which winds its way northwest alongside the Schuylkill River through Pottsville and Reading, then more due west through Lebanon County and into Dauphin County, where it is received by U.S. Route 322 in Hershey. Photo taken 01-25-2025.

Soon after US 422's divergence, US 202 reassurance appears. Photo taken 01-25-2025.

Traffic entering US 202 south from US 422 east has separate access to Swedesford Road via one-half of a right-in/right-out. Photo taken 01-25-2025.

US 202 will meet Pennsylvania Route 252 (Valley Forge Road) at an interchange a mile away. Photo taken 01-25-2025.

At right, US 202 takes in traffic from eastbound US 422 and the highway enters Tredyffrin Township, Chester County, its name taken from the Welsh language. Photo taken 01-25-2025.

The Devon area of Easttown Township can be reached from the forthcoming exit. Photo taken 01-25-2025.

The ramp to PA 252 north sits in the distance. True to its street name, PA 252 north heads straight into the Valley Forge National Historical Park, following Valley Creek to George Washington's Revolutionary War headquarters. Due to the tight quarters at this interchange, there are separate ramps from northbound US 202 to PA 252 and Swedesford, with no left turns permitted at the end of the former ramp. Photo taken 01-25-2025.

PA 252 then parallels US 202 immediately to the south for a bit, resulting in a separate exits from US 202 south to PA 252 south one mile from here. Photo taken 01-25-2025.

Sound barriers designed to mimic trees line this portion of US 202. Photo taken 01-25-2025.

Chesterbrook Boulevard intersects US 202 ¼ mile past PA 252. Meanwhile, to the right opposite the sound barrier sits Wilson Farm Park. Photo taken 01-25-2025.

Attached to a lot of metal piping, a variable message sign hangs overhead before the exits. Photo taken 01-25-2025.

Chesterbrook Boulevard is ⅜ mile past the final advance sign for PA 252 south; Pennsylvania is one of a small number of states that still uses eighth-mile highway signs on some highway signs. Photo taken 01-25-2025.

The ramp to southbound PA 252, which has inherited the Swedesford Road name, is at right. This is a southbound-exit and northbound-entrance interchange. Photo taken 01-25-2025.

The ramp to southbound PA 252, which has inherited the Swedesford Road name, is at right. This is a southbound-exit and northbound-entrance interchange. Between here and Chesterbrook, PA 252 crosses the Chester Valley Trail and accesses the Berwyn Park complex. Photo taken 01-25-2025.

The offramp to Chesterbrook soon follows. Photo taken 01-25-2025.

At Swedesford just south of here, Chesterbrook becomes Cassatt Road and goes south to Conestoga Road near the Berwyn SEPTA station. Photo taken 01-25-2025.

US 202 reassurance follows. Photo taken 01-25-2025.

Another crossing of Swedesford soon afterward is lined with sound barriers. Photo taken 01-25-2025.

At right, an onramp from Swedesford enters US 202 south as an extension of Duportail Road. Photo taken 01-25-2025.

The onramp curves alongside the highway proper at mile marker 21. Photo taken 01-25-2025.

In 2½ miles, an interchange indirectly leads to Pennsylvania Route 29 toward Great Valley and Malvern. Photo taken 01-25-2025.

The Great Valley campus of Penn State is off the first exit, and Immaculata University off the second exit. Photo taken 01-25-2025.

North Valley Road is then crossed over. Photo taken 01-25-2025.

At the 1½-mile advance sign for PA 29, a spur of the Chester Valley Trail passes overhead. Photo taken 01-25-2025.

Cedar Hollow Road is the next crossing. Photo taken 01-25-2025.

The ramp to PA 29 north, via Liberty Boulevard, is up ahead, ¾ mile prior to the PA 29 south exit. Photo taken 01-25-2025.

This exit ramp contains a sweeping curve to the right. Photo taken 01-25-2025.

PA 29 itself (Morehall Road) passes overhead at this point. Photo taken 01-25-2025.

The ramp to PA 29 south via Swedesford is ahead. Photo taken 01-25-2025.

After that offramp comes US 202 reassurance. Photo taken 01-25-2025.

An onramp to the southbound lanes is at right. Photo taken 01-25-2025.

Exits serving Frazer and Downingtown via Pennsylvania Route 401 and U.S. Route 30 are, respectively, ¾ and 2¼ miles away. Photo taken 01-25-2025.

The exit for PA 401 is now half a mile away. Photo taken 01-25-2025.

Mill Lane subsequently passes over the highway. Photo taken 01-25-2025.

The exit to PA 401 (Conestoga Road) is on the right after a leftward curve. Photo taken 01-25-2025.

The US 30 interchange is 1½ miles after PA 401. Photo taken 01-25-2025.

The area of Exton can be reached from the next exit. Photo taken 01-25-2025.

Pavement markings then indicate through lanes for US 202 and the exit lane for US 30. Photo taken 01-25-2025.

The US 30 exit is half a mile from another Swedesford Road crossing. Photo taken 01-25-2025.

A second lane for US 30 then becomes available at far right. Photo taken 01-25-2025.

The line between the lanes for each route has now become solid, indicating the exit movement is about to occur. This will happen at the end of the wide curve to the left ahead. Photo taken 01-25-2025.

At the split from US 30, Exton is added as a control city via US 30 Business. Photo taken 01-25-2025.

The segment of US 30 intersected by US 202 serves the Main Line corridor of suburbs west of Philadelphia, which is named after the old Philadelphia Main Line Railroad. Photo taken 01-25-2025.

US 30 is known here, on the border of East and West Whiteland townships, as Lancaster Avenue. Photo taken 01-25-2025.

US 30 then leaves its surface alignment (which becomes US 30 Bus.) onto the "Exton By-Pass", which is crossed by US 202 here. Photo taken 01-25-2025.

Turning south, US 202 is now two lanes in each direction and purely asphalt-paved. Photo taken 01-25-2025.

US 202 is now dubbed the West Chester Bypass, and its next three exits serve the city of West Chester. Ahead, Pennsylvania Route 100 flies overhead after an interchange with US 202 north, the southern terminus of PA 100 since 2003. Photo taken 01-25-2025.

The travel time to U.S. Route 1 in Concordville is displayed to the right. Photo taken 01-25-2025.

Eastbound U.S. Route 322 subsequently joins US 202 for a concurrency of about eight miles, just prior to an interchange with Paoli Pike. Photo taken 01-25-2025.