Route 501 bridge over Hammer Creek

The Route 501 bridge over Hammer Creek is shown in this September 2013 photo. Federal transportation funding will expire in May if Congress fails to pass legislation. 

Federal, state and local officials will cross party lines Wednesday as they converge on Lancaster city as part of a national effort to raise awareness of transportation funding shortages.

The nonpartisan American Public Transportation Association is leading the push for a long-term federal transportation bill as the nation nears the May 31 deadline when temporary funding runs out.

At the state level, the Pennsylvania Public Transportation Association and the Keystone Transportation Funding Coalition will host a transit conference at the Lancaster County Convention Center to bring attention to the issue. The conference will begin at 10:30 a.m.

On Wednesday, former Gov. Ed Rendell, Auditor General Eugene DePasquale, members of the state’s federal delegation and numerous state stakeholders will discuss the need for federal dollars to update failing state infrastructure systems.

More than 140 communities across the nation will host “Stand Up for Transportation” events this week.

The goal, organizers say, is to send a united message to congressional lawmakers that they must set aside partisanship and pass a comprehensive transportation bill.

The Obama administration has proposed legislation that would spend $478 billion on road and transit projects over the next six years.

Congress has approved a series of temporary funding fixes since a transportation bill expired in 2009 — including a nearly $11 billion measure that is scheduled to expire next month.