Southbound US 202 in King of Prussia reopened Nov. 4 after eight months of sinkhole repair, restoring full traffic flow on a corridor that connects to routes used across Montgomery County.
The Pennsylvania Department of Transportation (PennDOT) reopened the southbound lanes of US 202, also known as DeKalb Pike, near Henderson Road in Upper Merion Township, according to the agency's project page. The stretch between Henderson Road and Saulin Boulevard had been closed to southbound traffic since late February.
The $22.4 million federally funded project addressed repeat sinkholes along the roadway, as the Philadelphia Inquirer reported.
How crews fixed it
PennDOT used what it calls a "limited mobility grouting program." Workers drilled holes through the pavement in a grid pattern, then pumped pressurized grout underground to fill voids beneath the road surface. According to PennDOT, crews drilled more than 100 feet deep in some spots, penetrating at least 10 feet of solid rock.
The project also included drainage pipe replacement and pavement reconstruction.
Two years of closures
Sinkholes forced closures in both directions on 202 over the past two years, according to the Inquirer. PennDOT first shut down the northbound lanes for about eight months, reopening them in November 2025 after completing Stage 1. Stage 2 reconstructed the southbound lanes.
Upper Merion Township sits on limestone bedrock. Geoff Hickman, the township's public works director, told the Inquirer the Route 202 sinkholes "are among the most significant in township history."
PennDOT spokesperson Brad Rudolph noted favorable conditions during the work. "The weather has been very cooperative this fall," Rudolph told the Inquirer.
What drivers should know
The road is open, but the project is not finished. PennDOT's project page lists the status at Step 3 of 4, with a proposed end date of winter 2026.
"While major construction has been completed … drivers will encounter short-term lane closures as needed by the contractor to finish the entire project," Rudolph said, according to the Inquirer.
PennDOT's project page includes live traffic cameras at Henderson Road and Saulin Boulevard for drivers who want to check conditions before heading out.
