Pilot project to ease Route 1 congestion
in West Windsor begins this week

Left and U-turn restrictions at
Washington Road and Harrison Street

NJDOT is seeking to reduce congestion along the Route 1 northbound corridor in the vicinity of Washington Road and Harrison Street where the rightmost of three lanes becomes crowded with motorists queuing to make left turns, particularly during peak travel periods. Temporary construction barrels will be used to implement the restrictions over the course of a planned 12-week trial period.

NJDOT has collected traffic volume and trip-time data at numerous locations in Princeton Township, Princeton Borough, West Windsor and Plainsboro prior to the trial and will continue to do so during the trial to evaluate the impacts of the restrictions.

After the conclusion of the trial, NJDOT will meet with stakeholders to present its findings as to whether the restrictions have proven to be effective in reducing Route 1 congestion and to discuss the extent of any secondary impacts on local streets and roads.

If the trial is deemed a success, the turns will not be restored and the Department will replace the temporary barriers with permanent more aesthetically pleasing barriers as expeditiously as possible.

If the trial is unsuccessful, the temporary restrictions will be removed to restore all existing traffic movements.

Numerous existing traffic movements at the Washington Road and Harrison Street intersections with Route 1 will remain available to motorists.

• Motorists heading east from Princeton on Washington Road (CR 571) will continue to be able to make all current movements at the Route 1 intersection. They may turn right onto Route 1 south, proceed straight through the intersection to continue on Washington Road, or turn left onto Route 1 north.
• Motorists heading west from West Windsor on Washington Road also will continue to have all three movements (left, straight or right) available at the Route 1 intersection.
• Motorists heading east from Princeton on Harrison Street also will have all three existing movements (left onto Route 1 south, straight into the Sarnoff facility or left onto Route 1 north) available.
• Motorists departing the Sarnoff facility onto Route 1 at Harrison Street will be restricted to right turns only onto Route 1 northbound.

Pilot details

Washington Road
Route 1 northbound and southbound motorists will be prevented from making left turns and U-turns at the Washington Road signalized intersection. While a number of options exist for motorists, only the preferred alternative will be posted.

• Route 1 northbound motorists seeking to make a left onto Washington Road toward Princeton will be directed to continue north on Route 1 and make a U-turn at the Scudders Mill interchange, proceed south on Route 1 and make a right turn onto Washington Road. The U-turn movement at the Scudders Mill interchange is the second exit off of Route 1 northbound.
• Route 1 northbound motorists seeking to make a U-turn can make that move at the Alexander Road or the Scudders Mill Road interchanges.
• Route 1 southbound motorists seeking to turn left onto Washington Road will be directed to proceed approximately 0.1 miles past Washington Road, take the ramp to Alexander Road eastbound and then proceed to Route 1 northbound from which they may turn right onto Washington road toward West Windsor.
• Route 1 southbound motorists seeking to make a U-turn may make that move at Fischer Place or Alexander Road.

Harrison Street
Route 1 northbound motorists will be prevented from making left or U-turns at the Harrison Street signalized intersection.

• Motorists will be directed to proceed north on Route 1 to the Scudders Mill Road interchange and take the U-turn ramp, which is the second ramp at the interchange as motorists head north on Route 1, to Route 1 southbound. They may turn right at at Harrison Street or continue south on Route 1.

In connection with the trial, turn restrictions will be implemented at Varsity Avenue and Fisher Place.

The traffic signal at Harrison Street will be optimized with a goal to improve traffic flow for Route 1 motorists.

NJDOT held public meetings in both communities to discuss the pilot program in January, and has kept an open line of communication in the months leading up to the implementation of the program.

The pilot-program had initially been planned to begin in March of this year, but NJDOT deferred the start to accommodate the spring opening of the new University Medical Center of Princeton at Plainsboro on Route 1 just north of Harrison Street.

NJDOT has deployed Dynamic Message Signs on Route 1, I-95 and I-295, as well as static signage on Route 1 notifying motorists of the restrictions and alternate routes.

The Department also developed a project-specific website where residents and motorists can get further information.