Road Construction Slows Traffic on I-287, I-80, US 46, and NJ 15 Across Morris County

Multiple construction projects are impacting major routes in and around Morristown, with lane closures expected to cause delays throughout the day and overnight hours.

MORRIS COUNTY, NJ — Ongoing road construction on several major highways is affecting travel across multiple municipalities in Morris County today, Thursday, July 18. According to updates as of 9:00 a.m., commuters are advised to anticipate delays due to lane and shoulder closures along Interstate 287, Interstate 80, U.S. Route 46, New Jersey Route 15, and NJ Route 181.

Major Construction Updates by Location:

• I-287 Southbound
  In Hanover Township, construction near Exit 39 (Route 10) has closed the right shoulder until 5:00 p.m.

• I-80 Westbound

  • In Denville Township, the right shoulder is closed between Exit 38 (US 46) and Exit 37 (CR 513/Hibernia Ave) until 3:00 p.m.

  • In Rockaway Township, the right shoulder is closed near Exit 35 (Mount Hope Avenue) until 2:00 p.m.

• US 46 – Parsippany-Troy Hills Township

  • Eastbound and westbound lanes near Cherry Hill Road (CR 654) are experiencing right lane closures until 3:00 p.m.

  • Westbound lanes near Parsippany Boulevard (US 202/CR 511) also have a right lane closure in place until 3:00 p.m.

• US 46 – Denville Township

  • Westbound lanes near Main Street (CR 644) have a right lane closed until 3:00 p.m.

• US 46 – Rockaway Township

  • Eastbound lanes near Main Street (CR 644) have the right shoulder closed until 3:00 p.m.

• US 46 – Mount Olive Township

  • Westbound lanes near Naughright Road have a right lane closure until 2:00 p.m.

  • Eastbound lanes just east of Netcong Road (CR 649) have two different closures: one affects a right lane and the other a center lane, both expected to last until 3:00 p.m.

• US 46 – Montville Township (Overnight Work)
  Beginning at 8:00 p.m., eastbound and westbound lanes near Hook Mountain Road (CR 621) will have alternating right lane and shoulder closures until 6:00 a.m. Friday morning.

• NJ 15 – Jefferson and Sparta Townships
  Northbound traffic is affected between Espanong Road/Weldon Road and Blue Heron Drive, with a right lane closure continuing until 2:00 p.m.

• NJ 181 – Jefferson Township
  Though listed under construction, all northbound lanes remain open south of Prospect Point Road. This status is expected to remain in effect until 5:00 a.m. Friday.

Commuter Impact

Drivers in Morris County, particularly those traveling through Parsippany, Denville, Rockaway, Mount Olive, and Jefferson, should plan for potential delays and consider alternate routes where possible. Lane and shoulder closures on key commuter corridors may significantly slow traffic during peak travel hours.

Motorists are encouraged to follow real-time traffic advisories from the New Jersey Department of Transportation (NJDOT) and local traffic services for updates throughout the day and night.

Construction schedules are weather-dependent and subject to change.