Several construction projects will close major roads in Nassau and Suffolk counties, starting Tuesday.

The state Department of Transportation said the closings are probable and subject to weather conditions and last-minute construction requirements.

The closings listed below are scheduled Monday through Friday, unless otherwise noted. Round-the-clock closings include weekends and holidays.

No road closings are scheduled Monday, Memorial Day.

For more information, motorists can call 511 or visit 511NY.org. In addition, travel information is at informny.com or on hand-held devices at informny.mobi.

LONG ISLAND EXPRESSWAY

**One lane in either direction may be closed in the Town of Brookhaven between Exits 67 and 70, 10 a.m.-3 p.m.

**One lane in either direction may be closed in Riverhead at Route 25, including shoulders, 7 a.m.-3 p.m.

**One lane in either direction may be closed in Riverhead between Exits 71 and 73, 10 a.m.-3 p.m.

advertisement | advertise on newsday

**One lane in either direction may be closed in Ronkonkoma between Exits 57 and 61, 9 a.m.-3 p.m.

**Westbound HOV lane may be closed in Huntington between Exits 52 and 51, 10 a.m.-3 p.m.

**All westbound lanes may be closed in North Hempstead between Exits 46 and 43, 10 p.m.-5 a.m.

**All eastbound lanes may be closed in Hempstead between Exits 37 and 39, 10 p.m.-5 a.m.

**One westbound lane may be closed in Holbrook between Smith Avenue and Laurel Street, 7 a.m.-3 p.m.

@Newsday

HECKSCHER STATE PARKWAY/ROUND THE CLOCK

**One southbound lane may be closed in East Islip north of the bridge over Route 27 and before Exit 44W, and south of bridge after 44E.

**Two northbound lanes may be closed in East Islip south of bridge from Exit 45W and north of bridge after Exit 44W.

advertisement | advertise on newsday

SOUTHERN STATE PARKWAY

**One lane in either direction may be closed in Hempstead between Exits 27 and 13, 7 a.m.-3:30 p.m.

**Peninsula Boulevard entrance ramp may be closed in either direction, 7 a.m.-3 p.m. and 9 p.m.-5 a.m.

**One eastbound lane may be closed in Hempstead between Exits 20 and 21, 10 p.m.-5 a.m.

**Two westbound lanes may be closed in Malverne between Cornwell Avenue and 250 feet west of Corona Avenue, 10 p.m.-5 a.m.

advertisement | advertise on newsday

ROUTE 24

**Two lanes may be closed in either direction between Wantagh Avenue and Meadowbrook State Parkway, 10 p.m.-6 a.m.

**One eastbound lane may be closed in East Meadow between Merrick Road and West Gate Street, 10 a.m.-3 p.m.

**One lane in either direction may be closed in Flanders between Spinney Road and Cross River Drive, 10 a.m.-3 p.m.

ROUTE 25

**One westbound lane may be closed in Southold between Tuckers Lane and Orient Ferry, 7 a.m.-3 p.m.

**One lane either direction may be closed in Mineola between Herricks Road and Elm Place, 10 a.m.-3 p.m.

**One lane either direction may be closed in Huntington at Route 110, 10 a.m.-3 p.m.

**One eastbound lane may be closed in Huntington at Lawrence Hill Road, 10 a.m.-3 p.m.

**One eastbound lane may be closed in Huntington between Randou Drive and Green Lawn Road, 10 a.m.-3 p.m.

ROUTE 27

**All westbound lanes may be closed in Bay Shore between Merge and Brentwood Road. 11 p.m.-5 a.m.

**One lane in either direction may be closed in Merrick between Merrick Avenue and southbound Meadowbrook State Parkway, 7 a.m.-3 p.m.

**One westbound lane may be closed in Southampton between Nicolls Road and Lincoln Avenue, 9 a.m.-3 p.m.

**One westbound lane may be closed in Brookhaven between North Ocean Avenue and Nicolls Road, 9 a.m.-3 p.m.

**One westbound lane may be closed in Brookhaven between Yaphank Avenue and Hospital Road, 9 a.m.-3 p.m.

**One lane in either direction may be closed in Hampton Bays between Exits 66 and 64, 10 a.m.-3 p.m.

**One eastbound lane may be closed in East Islip between Carlton Avenue and Heckscher State Parkway ramp, 9 a.m.-3 -p.m.

**One westbound lane may be closed in East Islip between Connetquot Avenue and Heckscher State Parkway ramp, 9 a.m.-3 p.m.

ROUTE 110

**One westbound lane may be closed in Amityville at Albany Avenue, 10 a.m.-3 p.m.

**One westbound lane may be closed in Huntington at Pulaski Road, 10 a.m.-3 p.m.

ROUTE 111

**One lane in either direction may be closed in Islip between Routes 27A and 25, 8 a.m.-4:30 p.m.

ROUTE 112

**One northbound lane may be closed in Port Jefferson Station between Route 347 and Reo Drive, 10 a.m.-3 p.m.

**One southbound lane may be closed in Port Jefferson Station between Route 347 and Roosevelt Avenue, 10 a.m.-3 p.m.

**One lane in either direction may be closed in Brookhaven between Route 25A and County Road 80, 8 a.m.-4:30 p.m.

ROUTE 347

**One westbound lane may be closed in Port Jefferson Station between Route 112 and Terryville Road, 10 a.m.-3 p.m.

**One eastbound lane may be closed in Port Jefferson Station between Terryville Road and Davis Avenue, 10 a.m.-3 p.m.

**One eastbound lane may be closed in Hauppauge between Route 111 and Mount Pleasant Road, 6 a.m.-11 a.m.

ROUTE 878

**One lane either direction may be closed in Hempstead between Burnside Avenue and Rockaway Turnpike, 10 a.m.-3 p.m.

COUNTY ROAD 19/AROUND THE CLOCK

**One northbound lane may be closed in Holbrook between Main Street and Vacation Court.

**One southbound lane may be closed in Holbrook between Laurel Street and Smith Avenue, 7 a.m.-3 p.m.

PENINSULA BOULEVARD

**One lane IN either direction may be closed in Hempstead at NY Route 878. 10 a.m.to 3 p.m.