PennDOT Announces Interstate 99 Designation and Signage
Release – Thursday, December 18, 2025. (Click on image to enlarge). PENNSYLVANIA – PennDOT has announced plans to designate U.S. Route 15 as Interstate 99 from Williamsport to the New York state line, with construction starting in spring 2026 and ending in fall 2027. The project includes signage upgrades and safety improvements, and aims to […]