I took a trip last Saturday mainly to see the completed I-895 Canton Viaduct project, US 322 Widening in southeast PA, the new US 422 Schuylkill River Bridge, and the PA 29 realignment in Collegeville, but I got some clinching in as well in mostly MD and NJ. I actually drove the Delaware Memorial Bridge for the first time after being a passenger years ago. (though I did not clinch or gain any mileage in DE)
Routes are mentioned below in the order I was on them.
Clinched: MD 833, MD 88, MD 128, MD 140, I-395(MD-Clarified that I clinched both branches), MD 295, I-895(MD), MD 700, MD 587, MD 755, MD 159, MD 715, MD 490, MD 7 (Havre De Grace), MD 763, MD 824, NJ 140, US 40(NJ), NJ 152, US 322(NJ), PA 29 (reclinch due to realignment in Collegeville), PA 401
New Mileage: MD 25, MD 129, US 1(MD), MD 648, US 40(MD), MD 2, MD 155, US 130(NJ), NJ 45, NJ 47, NJ 50, PA 252, PA 113
EDIT (2-2-2021): Corrected to clarify that I did not clinch PA 252, but I did gain new mileage.