PA 737 begins at a partial cloverleaf interchange with the US 222 freeway on the northern edge of the borough of Kutztown in Berks County as a four-lane divided highway.

From US 222, the route heads north into Maxatawny Township and soon becomes two-lane undivided Krumsville Road as it runs through forested areas to the east of Sacony Creek.

The road heads northwest and then north through an S-curve past a few homes before it turns west and enters Greenwich Township.

Past this interchange, the road curves to the north and heads into the community of Krumsville, where it intersects Old Route 22 near residences and a few businesses.

[3][4] Past Krumsville, PA 737 becomes an unnamed road and enters agricultural areas with some trees and homes, curving to the northwest.

Here, the route runs past homes prior to turning west and crossing the Wanamaker, Kempton and Southern Railroad at-grade.

[5] On March 8, 1962, this highway was designated by the state as PA 737, which ran north on Greenwich Street out of Kutztown before following its present alignment to Kempton.

The bridge projects used stimulus money from the American Recovery and Reinvestment Act of 2009, which cost the county about $180,000 (2009 USD) for the studies.