Next week is school vacation, the quietest week of the year on the Vineyard, but in Oak Bluffs it will be anything but quiet as the sound of hammers, saws and heavy equipment fills the air.

Construction workers are scrambling to complete several major building projects before spring turns to summer in a few short months.

There are an unusually high number of new projects in Oak Bluffs this year.

And this week work crews were busy toiling away on the various projects. On Sea View avenue a wooden frame went up for the new Steamship Authority ferry terminal, a $10 million project.

Down the road state workers were replacing the Little Bridge and Big Bridge, a $15 million project under way by the state Department of Transportation.

In Eastville workers were putting the finishing touches on the new Martha’s Vineyard Hospital, which at a cost of $52 million is the largest capital construction project in the history of the Island.

At the top of Circuit avenue workers were pouring a new foundation at the old town library at the intersection of Pennacook avenue as part of a town-sponsored project to create a commercial building with a pharmacy on the first floor and affordable housing on the second floor.

And outside of town a small army of builders were hard at work on the new $11 million YMCA, which when completed will be a 38,000-square-foot building across from the regional high school on the Edgartown-Vineyard Haven Road.

There are also a few major construction projects that haven’t started yet, including a town renovation of the clay and brick comfort station along the North Bluff, and a large road improvement project on Oak Bluffs and Lake avenues.

The rush to finish most of these projects in time for summer is not just a goal. The town selectmen have a policy that prohibits renovation work on downtown buildings between June 1 and Sept. 15, except in an emergency.

The policy has been in effect since 1992.

Town administrator Michael Dutton this week said selectmen will enforce the policy.

“The reason is fairly obvious. We want our downtown to look the best for the summer; we don’t want visitors walking around in a construction site,” he said.

Spokesmen for three of those four projects this week said that construction should be complete well before the start of the summer season. Steamship Authority general manager Wayne Lamson said the new ferry terminal is on target for completion by May 20. He said the project has experienced only small delays.

“Workers are putting in extra time to get us back on schedule; as of right now we are confident the new terminal will be operational by May 20 . . . remember we don’t really have a choice. If the new terminal [wasn’t completed on time] then the only alternative would be to shift operations to Vineyard Haven, which really isn’t an option,” Mr. Lamson said.

Oak Bluffs highway superintendent Richard Combra Jr. said he expects the Lake avenue project to be completed by May 31.

Melissa Vincent of The Resource Inc. (TRI), the developer and contractor for the old library conversion project, is also optimistic that work will be done by summer, although she did not have a firm date. “We are telling people we will be done by early summer; we think we can be done with the exterior by early June,” she said.

The biggest question mark may be on the comfort station project. At a recent selectmen’s meeting, engineer Stephanie Mashek said work could begin this spring and continue through the summer, which would appear to require a waiver from selectmen on their no summer construction policy.

Mr. Dutton said the timetable for the new bathroom, which will be paid for through a combination of Community Preservation Act funds and a state grant, is still up in the air. “We could go either way, we could vote to allow construction during the summer, or we would hold them up until the fall . . . we have to wait to see what their schedule is,” he said.