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Major Allentown road work project to begin next week and last 2 years. Here are the details.

This stretch of Route 145/South Fourth Street in Allentown is set for a major road work project that will continue through October 2026, according to PennDOT. (April Gamiz/첥Ƶ)
This stretch of Route 145/South Fourth Street in Allentown is set for a major road work project that will continue through October 2026, according to PennDOT. (April Gamiz/첥Ƶ)
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A long-planned project to improve South Fourth Street in Allentown is set to get under way.

Road work on the thoroughfare, which carries Route 145, will begin Monday and continue for the next two years, according to PennDOT spokesperson Ron Young.

Motorists can expect lane restrictions at night. PennDOT will provide updates as traffic patterns change during the project.

The project extends along South Fourth Street between Emmaus Avenue and West Susquehanna Street. An additional section of road along West Susquehanna Street between South Fourth Street and Wyoming Street will be included in the project.

Improvements include repaving the road, adding a center turn lane, adding a right turn lane from northbound South Fourth Street onto West Emmaus Avenue, adding a left turn lane from West Susquehanna Street onto southbound South Fourth Street, and intersection improvements at South Fourth and Brookdale/South Fifth streets. The project also will include traffic signal upgrades, drainage improvements, new pavement markings and construction of Americans with Disability Act-compliant curb ramps.

Scranton-based Kriger Construction is the general contractor on the $7.4 million project. Work is expected to be finished in October 2026, Young said.

The section of Route 145/South Fourth Street has an average daily traffic volume of 19,582 vehicles, according to PennDOT.

These Lehigh Valley road work projects will affect your drive this year. Route 309/Tilghman Street interchange tops list.

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