|Maintained by PennDOT and City of Bethlehem|
|Length:||17.745 mi (28.558 km)|
|Existed:||1928 – present|
|South end:||PA 611 in Nockamixon Township|
| PA 563 in Nockamixon Township
PA 212 in Springfield Township
I-78 in Hellertown
|North end:||PA 378 in Bethlehem|
Pennsylvania Route 412 (PA 412) is a 17.75-mile-long (28.57 km) north–south state route located in Northampton and Bucks counties in southeastern Pennsylvania. Its southern terminus is at PA 611 in the Nockamixon Township community of Harrow. Its northern terminus is at PA 378 in Bethlehem. The route passes through rural areas in northern Bucks County, forming a concurrency with PA 212 in the Springtown area. From there, PA 412 continues into Northampton County and passes through Hellertown before interchanging with Interstate 78 (I-78) and heading into Bethlehem. In Bethlehem, PA 412 passes the former Bethlehem Steel site and runs through the South Side neighborhood.
PA 412 was originally part of the 18th-century Durham Road that ran through Bucks County and north into the Lehigh Valley. The route was first designated by 1927 between PA 212 in Springtown and PA 12 in Bethlehem. PA 412 was extended south to U.S. Route 611 (US 611) in Harrow by 1930. The route was realigned through the South Side of Bethlehem in the 1980s.
PA 412 begins at an intersection with PA 611 in the community of Harrow in Nockamixon Township, Bucks County, heading northwest on two-lane undivided Durham Road. The road passes through farmland with some homes and businesses, coming to an intersection with the northern terminus of PA 563. The route continues through a mix of farmland and woodland with some development, passing through Bucksville. PA 412 enters Springfield Township and becomes an unnamed road, passing through Gallows Hill. The road winds northwest through more rural areas and comes to an intersection with PA 212. At this point, PA 412 turns west to join PA 212 in a concurrency, heading through forests and fields before passing through the residential community of Springtown as Main Street. The road curves southwest and heads back into rural areas as an unnamed road. PA 412 splits from PA 212 by turning west, passing through farmland and woodland.
The route enters Lower Saucon Township in Northampton County, becoming Leithsville Road and running through more rural areas. The road turns north at the community of Leithsville and passes through woodland with homes and commercial establishments. PA 412 enters Hellertown and becomes Main Street, a three-lane road with a center left-turn lane that runs past businesses. The route becomes two lanes again and becomes lined with homes with a few businesses as it continues north through Hellertown. The road becomes the border between Hellertown to the west and Bethlehem to the east as it comes to an interchange with I-78.
Past this interchange, PA 412 fully enters Bethlehem and becomes Hellertown Road, passing through commercial areas. The route gains a second northbound lane and passes over the Saucon Creek and under a Norfolk Southern railroad spur before turning northwest onto East 4th Street. The road passes between the former Bethlehem Steel plant to the north and a railroad yard to the south, curving west and becoming a three-lane road with one northbound lane and two southbound lanes. PA 412 passes over the railroad spur before turning northwest onto four-lane divided Daly Avenue. The route passes between Sands Casino Resort Bethlehem to the north and residential neighborhoods to the south, curving west. PA 412 passes to the south of more of the former Bethlehem Steel site, turning west onto undivided East 3rd Street, with two northbound lanes and one southbound lane. The route passes through commercial areas, narrowing to two lanes and heading through the downtown area of the South Side neighborhood of Bethlehem. PA 412 intersects an access road to the Hill to Hill Bridge, which carries PA 378 over the Lehigh River to the north, at which point PA 412 turns south onto Brodhead Avenue. A short distance later, the route turns southwest onto Broadway and passes through urban areas of homes and businesses. PA 412 reaches its northern terminus at an intersection with PA 378 known as Five Points.
The predecessor to PA 412 was the Durham Road, an 18th-century road that linked Bristol with upper Bucks County, where it split into branches serving various communities such as Bethlehem and Easton. When Pennsylvania first legislated its state routes in 1911, what is now PA 412 was not designated as part of a route. PA 412 was first designated by 1927 to run from PA 212 near Springtown north to PA 12 (now PA 378) in Bethlehem. At this time, the entire route was paved except for the southernmost portion. By 1930, PA 412 was extended south to it current terminus at US 611 (now PA 611) in Harrow. By this time, the entire route was paved. PA 412 was realigned in Bethlehem to use Daly Avenue, 3rd Street, Brodhead Avenue and Broadway instead of 4th Street to reach PA 378 in the 1980s. In March 2012, a project began to widen PA 412 between Cherry Lane in Hellertown and Daly Avenue in Bethlehem. This project will expand the road to two southbound lanes and three northbound lanes between I-78 and Shimersville Road and improve the interchange with I-78. The project is expected to be finished in 2016.
|Bucks||Nockamixon Township||0.000||0.000||PA 611 (Easton Road) – Easton, Doylestown|
|0.509||0.819||PA 563 south (Mountain View Drive) – Quakertown, Dublin||Northern terminus of PA 563|
|Springfield Township||6.945||11.177||PA 212 east (Durham Road) – Riegelsville||Southern terminus of PA 212 concurrency|
|8.827||14.206||PA 212 west (Springfield Road) – Quakertown||Northern terminus of PA 212 concurrency|
|Northampton||Hellertown||14.222||22.888||I-78 – Allentown, Easton||Exit 67 (I-78)|
|Bethlehem||17.745||28.558||PA 378 (Wyandotte Street)|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- Bureau of Maintenance and Operations (January 2015). Roadway Management System Straight Line Diagrams (Report) (2015 ed.). Pennsylvania Department of Transportation. Retrieved June 30, 2015.
- Google (January 8, 2014). "overview of Pennsylvania Route 412" (Map). Google Maps. Google. Retrieved January 8, 2014.
- Bucks County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2013. Retrieved January 8, 2014.
- Northampton County, Pennsylvania Highway Map (PDF) (Map). PennDOT. 2013. Retrieved January 8, 2014.
- Souderlund, Jean R. and Catherine S. Parzynski (2008). Backcountry Crucibles: The Lehigh Valley from Settlement to Steel. Associated University Presses. p. 211. Retrieved January 2, 2014.
- Map of Pennsylvania Showing State Highways (PDF) (Map). Pennsylvania Department of Highways. 1911. Retrieved January 1, 2014.
- Map of New Jersey (Map). Tydol Trails. 1927. Retrieved February 9, 2011.
- Tourist Map of Pennsylvania (PDF) (Map). Pennsylvania Department of Highways. 1930. Retrieved January 1, 2014.
- Pennsylvania Official Transportation Map (back) (PDF) (Map). Pennsylvania Department of Transportation. 1989. Retrieved January 8, 2014.
- "Northampton Co - Rt 412 Improvements in Hellertown and Bethlehem". WFMZ-TV. Allentown, PA. October 10, 2014. Retrieved January 25, 2015.
Media related to Pennsylvania Route 412 at Wikimedia Commons
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