The Pennsylvania Department of Transportation's Office of Public-Private Partnerships is accepting unsolicited proposals for transportation projects from the private sector through Oct. 31.
The submission period applies to PennDOT-owned projects and infrastructure.
During this period, private bidders can submit proposals offering innovative ways to deliver transportation projects across a variety of modes including roads, bridges, rail, aviation and ports.
Proposals can also include more efficient models to manage existing transportation-related services and programs.
The state's P3 law, enacted in 2012, established a seven-member Public Private Transportation Partnership Board.
In February, Pennsylvania raised $800 million through an oversubscribed sale of private activity bonds for its Rapid Bridge Replacement Project, the first P3 in the U.S. to bundle multiple bridges into a single procurement.
Pennsylvania intends to replace 558 bridges over three years.
