Pennsylvania Route 100

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PA Route 100 marker

PA Route 100
Route information
Maintained by PennDOT
Length: 58.80 mi[1] (94.63 km)
Major junctions
South end: US 202 in West Chester
  US 30 at Exton
I-76 / Penna. Tpk. near Lionville
US 422 near Pottstown
US 222 near Lower Macungie
I-78 / US 22 near Breinigsville
North end: PA 309 in Pleasant Corners
Location
Counties: Chester, Montgomery, Berks, Lehigh
Highway system
PA 99 PA 101
US 62 PA-62 (1926).svg PA 63

Pennsylvania Route 100 (PA 100) is a state highway in the U.S. state of Pennsylvania that runs from U.S. Route 202 in West Chester, Pennsylvania to Pennsylvania Route 309 in Pleasant Corners, Pennsylvania.

The highway replaced Pennsylvania Route 62 in the 1930s, although most spur routes of PA 62 still retain their numbers.

Route description[edit]

Chester County[edit]

Northbound PA 100 shield in Exton, past the interchange with US 30

PA 100 begins as an expressway in West Goshen Township north of West Chester at an interchange with U.S. Route 202. Only northbound lanes of US 202 have access to PA 100, and PA 100 southbound has access only to southbound US 202. In 2008, this section went under a $9.9 million resurfacing project to replace the badly deteriorated original concrete surface with asphalt. In West Whiteland Township, the expressway ends when PA 100 meets its old alignment that is called Pottstown Pike that was decommissioned in 2003. It then passes under U.S. 30/Exton Bypass at an interchange in the southern portion of Exton.

Just north of the US 30 interchange in the center of Exton, PA 100 intersects U.S. 30 Business also known as Lincoln Highway. In Uwchlan Township, PA 100's next major intersection is with Pennsylvania Route 113, connecting Downingtown and Phoenixville. Less than a mile north of PA 113, PA 100 intersects Interstate 76 the Pennsylvania Turnpike at the Downingtown exit (312). In West Vincent Township, PA 100 meets PA 401 in the village of Ludwigs Corner.

The route continues north into South Coventry Township, meeting Pennsylvania Route 23 in the village of Bucktown. About a mile south of Pottstown, PA 100 meets Pennsylvania Route 724 at an interchange. In North Coventry Township, PA 100 meets U.S. Route 422 also known as the Pottstown Expressway. US 422 and PA 100 meet at a full Cloverleaf interchange.

Eagle Bypass[edit]

Split between PA 100 and Graphite Mine Road

The Eagle Bypass (partially signed as PA 401 Alt. Truck) is an alternative to current Pennsylvania Route 100 through the area near Eagle, PA. Graphite Mine Road, when completed, was originally anticipated to be a new alignment to Route 100 through Eagle. In August 2009 the southern half of the road opened, finally completing the roadway through the area (the northern half had been completed and opened since June 2005). To the surprise of many in the area PA 100 has remained on its former alignment (Pottstown Pike) through the village center. Traveling northbound on PA 100 past the Turnpike, the roadway's layout is designed to make Graphite Mine Road appear as the default straight ahead road, while signage points drivers into a left turn lane to continue on PA-100/Pottstown Pike North at the newly constructed intersection. As for the northern Pottstown Pike/Graphite Mine Rd intersection on the opposite side of town, travelers on Route 100 South find PA-100/Pottstown Pike as the straight ahead route still, although there is a text sign just before the intersection that reads, "Graphite Mine Road to PA-100 South: Keep Left." As of June 2010 it is still unclear whether PENNDOT plans to keep 100 on its current alignment or move it to the new roadway.

Montgomery County[edit]

PA 100 northbound at Shoemaker Road in Pottstown

After crossing the Schuylkill River, PA 100 enters Montgomery and the town of Pottstown. There is a northbound-only exit accessing High Street (with a corresponding southbound-only on-ramp), followed immediately by an intersection with the southern terminus of Pennsylvania Route 663. North of Pottstown, PA 100 is multi-laned and divided road with some exits but not at limited-access level. One of those exits is in Douglass Township when PA 100 meets Pennsylvania Route 73 at a Diamond interchange.

Berks County[edit]

North of the PA 73 interchange, PA 100 returns to a two laned local road in Berks County. In Berks County, PA 100 passes through the towns of Bechtelsville and Bally. PA 100 becomes Main Street in Bally. In Hereford Township Just north of Bally, PA 100 begins a long concurrency with Pennsylvania Route 29 into Lehigh County.

Lehigh County[edit]

As PA 100/PA 29 enters Lehigh County, the road is known as Chestnut Street. In Upper Milford Township marks the northern terminus of the concurrency with PA 29. As of July 1, 2011, PennDOT created a truck route to bypass the sharp curves on PA 100. The truck route begins at the intersection with PA 29 and runs concurrent with it. It then turns to the west along Buckeye Road before rejoining PA 100 in Macungie.[2] Northwest of the concurrency with PA 29, PA 100 is called Kings Highway. PA 100 enters Macungie as Main Street. A mile south of Trexlertown, PA 100 becomes a newly formed 2 lane divided highway around Trexlertown called Trexlertown Bypass, though when it merges with US 222, it becomes 4 lanes. The Highway was completed in 2005 and the US 222 segment was completed in 2007.

In Upper Macungie Township, just north of Trexlertown, the concurrency with U.S. Route 222 ends and PA 100 returns to the pre-bypass road bed (now named Trexlertown Road between the bypass end points). After splitting from U.S. Route 222, PA 100 passes through an industrial/warehouse area. In Fogelsville, PA 100 intersects Interstate 78 and U.S. Route 22 at exits 49A-B north of the industrial area. North of the I-78 interchange, PA 100 meets Tilghman Street/Main Street the former segment of US 22. For more than 10 miles (16 km) north of the I-78 interchange, PA 100 is a two-laned local road running through many farms and rivers. In Heidelberg Township, PA 100 ends at a "T" intersection with Pennsylvania Route 309.

History[edit]

PA 100 was originally signed as Pennsylvania Route 62, for its entire length. By 1940, PA 100 was commissioned although the PA 62 spurs of PA 162, PA 262, PA 562, and PA 662 still remained.

Before 2003, south of Exton, PA 100 used to continue south along Pottstown Pike towards West Chester; the connector expressway (to US 202) split from it just south of Exton. Once PA 100 entered West Chester it became High Street, the main north–south artery route through the town, and it picked up a concurrency with Business U.S. 322. Several blocks north of West Chester University it turned right onto Price Street, leaving the US 322 Business concurrency and picking up the beginning of PA 52. At the Brandywine Picnic Park in Pocopson it forked to the left onto Creek Road, leaving the PA 52 concurrency. It continued south winding through southern Chester and Delaware Counties following the Brandywine Creek into Delaware, with a very short wrong-way concurrency with U.S. 1/Baltimore Pike, then becoming Delaware Route 100. The alignment was changed due to local complaints about long-distance and freight traffic mistakenly traveling through West Chester via High Street to get to US 202 towards Delaware on the south side of West Chester, instead of the more appropriate path of travel along the spur (to US 202) which is the current southernmost part of PA 100. The old alignment of PA 100 south of Exton to the Delaware border is still driveable, although there was a slight traffic-pattern change northbound just before US 1 so that northbound traffic would have a traffic light, not a stop sign (this eliminates the northbound wrong-way concurrency with US 1 southbound). DE 100 was not decommissioned and still exists.

PA 100 was also truncated in order to reduce truck traffic along rural roads and on the streets through West Chester. Plans to remove the PA 100 designation along this stretch date back to 1990 when the municipalities along the route, with support from the West Chester Regional Planning Commission, passed resolutions to remove the designation. The plan was approved by the Chester County Planning Commission in 1999 and was approved by PennDOT in 2002. The truncation of the route caused confusion to motorists and affected businesses along the route.[3]

On September 28, 2007, the 5.5 mi (8.9 km) Jaindl Highway (Trexlertown Bypass) opened and rerouted PA 100 onto the western loop instead of continuing on Trexlertown Road through Trexlertown.[4]

Major intersections[edit]

County Location Mile[1] km Destinations Notes
Chester West Goshen Township 0.0 0.0 US 202 south Interchange
West Whiteland Township 2.2 3.5 Pottstown Pike Southbound exit and northbound entrance, former routing of PA 100
2.8 4.5 US 30 (Exton Bypass) – Downingtown, Lancaster, King of Prussia, Philadelphia Interchange
3.4 5.5
US 30 Bus. (Lincoln Highway) – Downingtown, Frazer
Uwchlan Township 6.4 10.3 PA 113 (Uwchlan Avenue) – Downingtown, Phoenixville
7.3 11.7 I-76 / Penna. Tpk. – Harrisburg, Philadelphia, New Jersey Exit 312 (Downingtown Exit) (I-76/PA Turnpike).
West Vincent Township 11.3 18.2 PA 401 (Conestoga Road) – Elverson, Malvern
South Coventry Township 16.1 25.9 PA 23 (Ridge Road) – St. Peters, Phoenixville
North Coventry Township 20.3 32.7 PA 724 (Schuylkill Road) – Birdsboro, Kenilworth, Phoenixville Interchange
20.7 33.3 US 422 – Reading, King of Prussia Interchange
Montgomery Pottstown West High Street Northbound exit and southbound entrance
21.2 34.1 PA 663 north (West King Street) Southern terminus of PA 663
Upper Pottsgrove Township Farmington Avenue Interchange
Douglass Township 27.3 43.9 PA 73 (East Philadelphia Avenue) – Boyertown, Gilbertsville Interchange
Berks Colebrookdale Township New Berlinville Interchange
Hereford Township 37.1 59.7 PA 29 south (Gravel Pike) – East Greenville Southern terminus of concurrency
Lehigh Upper Milford Township 41.2 66.3
PA 29 / PA 100 Truck north (Chestnut Street) – Emmaus, Allentown
Northern terminus of concurrency
Macungie
PA 100 Truck south (Chestnut Street) – Emmaus
Upper Macungie Township US 222 south (Hamilton Boulevard) – Kutztown, Reading Southbound exit. Southern terminus of US 222 concurrency.
US 222 north (Frederick J. Jaindl, Jr. Memorial Highway) – Allentown PA 100 Northbound exit. North end of US 222 concurrency. US 222 continues to Allentown.
50.4 81.1 I-78 / US 22 – Harrisburg, Allentown Exit 49 (I-78/US 22).
Heidelberg Township 58.8 94.6 PA 309 – Tamaqua, Hazleton, Allentown
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

PA 100 Truck[edit]


PA Route 100 Truck
Location: Macungie
Length: 3.1 mi[5] (5.0 km)

Pennsylvania Route 100 Truck is a truck bypass of a winding portion of PA 100 between the north end of the PA 29 concurrency and Macungie in which trucks with trailers over 45 feet are not allowed. The route heads north on PA 29 before heading west along Buckeye Road and Chestnut Street.[5][6]

See also[edit]

References[edit]

External links[edit]