Last month, engineers from Camp, Dresser, McKee, and Smith withstood tough questions from residents about the firm’s decade long, and multi-million dollar, plan to overhaul streets, sewers, and drainage pipes in Marion’s Village.

On Thursday night the engineers returned with answers.

Shawn Syde, a project engineer, said roads in the poorest condition would be repaired first as part of a five-phase plan, occurring over 10 years.

Voters will be asked to vote on the proposal on May 13 at Town Meeting.

The first phase, known as Phase 1A, targets Ryder Lane, South Street, and Spring Street over an 18-month period at a cost of $3,147,400.

That is a price estimate after a grant, a state financed low-interest loan, and money allocated by the state for street repairs are accounted for.

The grant totals $1 million and was awarded by the MassWorks Infrastructure program. The project’s actual cost, Syde said, is around $5,210,000.

Next Thursday, project bids from contractors will be opened. At that time, Syde said the repair costs would be known with more accuracy.

To fund the project, the price of sewer rates will be increased. Otherwise, residents should expect no change to the water rate or tax rate.

Should voters approve the proposal, work on Ryder Lane begins in July. South Street repairs begin in September, after Labor Day, to accommodate summer traffic.

Work on those roads is to be finished by December 2014.

Those streets were chosen because they are in the worst condition Syde said. About 800 feet of sewer lines are in need of repair, 4,500 feet of drains must be replaced, and 3,000 feet of roadway is to be repaved.

The repairs should alleviate isolated flooding occurring on those streets following heavy rains.

If completed, Phase1A would bring Village sidewalks into compliance with the Americans with Disability Act through the use of ramps and five-foot wide walkways.

“Most importantly, this is a roadway safety improvement project,” Syde said.