Bentley Systems Inc., Exton, says it's purchaesd InspectTech Systems Inc., Pittsburgh, which makes and sells "field inspection applications and asset management services for bridges and other transportation assets."

According to Bentley, InspecTech counts US federal, state and local government agencies, transit authorities, toll roads and bridge managers as clients, as well as an Australian highway agency.

Bentley won't say what it agreed to pay. Sellers include InspectTech founders Mike Schellhase and Jeremy Shaffer, Carnegie Mellon-trained engineers who will now work for Bentley. 

In support of the deal, Bentley's statement quoted Jan Wiley, a bridge engineer for the state of Iowa: "We work closely with both companies and have received escellent support and service from both. We are confident, with Bentley's history of acquisitions," that service will improve. For example, Iowa uses Bentley's Superload software work tracking system, and Wiley said it will be useful to have InspectTech integrated into Superload, creating "improved workflows for bridge inspections." 

It's been a busy week for Bentley, which this week holds its "Be Together" users' conference at the Pennsylvania Convention Center in Philadelphia. The firm says it plans a new office to employ 50 in Center City.