#FirstAlertTraffic: Several vehicles were involved in a fiery crash that blocked busy Route 309 in #MontcoPA Friday morning.⁠ ⁠ The wreck left Route 309 northbound between the Pennsylvania Turnpike and Susquehanna Road -- right near Upper Dublin High School -- closed, Upper Dublin Township police said.⁠ ⁠ At least seven cars were involved and at least one vehicle caught fire, police said.⁠ ⁠ Click link 🔗 in bio for details on the wreck.