The Causeway was closed at about 9 a.m. ahead of the approaching high tide and reopened at about 11:15.
The emergency work will take place on Elm Street with an alternate MBTA bus route also in place.
The restriction on the railroad right of way is for an annual cleanup and property repair.
Superintendent John Buckey sent out the alert to families with more road work set for the area of the school on Wednesday.
There had been detours on and around the street during the ongoing Village Street digging project.
Marblehead police said detours were to continue at Village Street on Monday.
More digging on Pleasant Street will shut down the road to through traffic on Monday and Tuesday.
Detours were expected to be in place until 5 p.m.
Detours will be in place for construction that will occur from 7 a.m. to 2 p.m.
The project is expected to last about six weeks with occasional lane closures and detours as necessary.
Officials said traffic traveling outbound on Tedesco Street towards Vinnin Square was to be detoured for several hours Tuesday afternoon.
The work, which was to begin Wednesday, will include restrictions on the westbound lane of Village Street.
Marblehead police are reminding residents of some streets in the area that are now "Do Not Enter" at times during school days.
Marblehead Department of Public Works said work will begin at Front Street at 7 a.m., weather permitting.
Stump grinding, sidewalk paving and gas main work add up to a tough travel day in the vicinity of Humphrey Street.
Police said gas line construction work will make the Humphrey Street intersection a headache on Thursday.
The Board of Selectmen officially lifted the overnight ban, putting in its place a snow emergency parking ban on a one-year, trial basis.
Parking is prohibited in the Roundhouse Road lot on Thursday and Friday for annual cleanup and repair of town property.
Police say there have been an increase of complaints about drivers using the hill as "a private speed jump."
After a delay, the winter ban on overnight parking will start in Marblehead this week.
Google picked the absolute best time to leave Boston if you want to avoid holiday traffic. Unfortunately, it's in the middle of the night.
Two people on this motorcycle somehow avoided serious injury in Marblehead.
More than 800 people died in drunken crashes over the Thanksgiving weekend between 2012 and 2016, according to MADD.
Police do not know when the road will be reopened.
Construction is forcing inbound and outbound detours on Pleasant.