Design-bid-build may still be the No. 1 project delivery method for U.S. construction, but other processes are rising that could challenge DBB’s stake in how some projects are carried out.One such arrangement, public-private partnerships (P3), is gaining steam with talks from Washington, D.C., about employing the method for President Donald Trump’s $1.3 trillion infrastructure spend. While more states and local entities are successfully turning to P3s to tackle major infrastructure overhauls and new projects, the method still runs up against a perception problem. Some elected officials are hesitant to employ P3s because they don’t want to let a private firm...