Police departments from Marion, Mattapoisett and Rochester could face longer commutes and additional expenses for handling routine court business.

The state House of Representatives will debate a plan on Wednesday that would supplement the existing state budget and, among other things, allow the Wareham District Court to continue operating.

Police departments from the three towns handle court business at the Wareham District Court. Should it be closed, police would have to drive 20 to 30 miles to the Plymouth Trial Court.

The court was put on a list of 11 closures and relocations proposed in July after Governor Deval Patrick signed a $519.9 million state trial court budget, which Supreme Judicial Court Chief Justice Roderick L. Ireland and Chief Justice for Administration and Management Robert A. Mulligan said would "impact significantly the quality of justice in our courts."

The bill, which will need to be approved by the state Senate after it is debated and passed by the House, will "replenish some accounts that were the subject of budget cuts in July," said State Representative Bill Straus (D-Mattapoisett).

Legislators have expressed opposition to the proposed court closures, which they say would strain district courts and inconvenience law enforcement officials and citizens who need to get to court. Wareham District Court business would be moved to Plymouth.

"The financial savings are negligible," said Straus, "as compared to the impact on the public."

State Representative Susan Williams Gifford (R-Wareham) said that while she hasn't seen the bill for herself, it appears that the Speaker of the House and the House Ways and Means Committee are on-board with the proposal.

"We should be good to go for the Wareham District Court," Gifford said.

The bill prohibits closures or relocations for the current fiscal year, which ends on June 30, 2012, said Gifford. Gifford added that legislation coming down the pike, however, could take care of the problem next year and beyond.

A bill that, if passed, would take the operation of the state courts out of the hands of the judges and place them in the hands of a "civilian administrator" is currently in conference committee, Gifford said. That bill would essentially put "laypeople in charge of running a business."

Budget cuts also threatened to close the Wareham District Court a year ago. A bill similar to the one set to be debated on Wednesday helped save it and several other trial courts from closure at that time.

Full list of proposed court closures and relocations:

• Berkshire Juvenile Court, with business moved to Northern Berkshire District Court (North Adams)
• Charlestown Division of the Boston Municipal Court to the Boston Municipal Court
• Framingham Juvenile Court to Marlborough District Court
• Gloucester District Court to Salem District Court
• Hingham District Court to Brockton District Court
• Leominster District Court to Clinton District Court/Fitchburg District Court
• New Bedford Housing Court to New Bedford District Court or to Fall River Durfee Courthouse
• Norfolk Juvenile Court (Dedham) to Brookline District Court
  
  • Brookline District Court criminal matters to Dedham District Court; civil matters to Newton District Court
• Wareham District Court to Plymouth District Court
• Westborough District Court to Worcester District Court
• Westfield District Court to Holyoke District Court/Chicopee District Court/So. Berkshire District Court