Traffic is building in several hotspots as holiday celebrations get underway.

A crash on the eastbound Northern State Parkway in North Hempstead is slowing traffic as the left shoulder is blocked, according to the state Department of Transportation’s 511ny website.

The state department of transportation website shows no traffic heading to Jones Beach. A Waze map showed heavy traffic along Robert Moses State Parkway on Fire Island around 11:45 a.m.

There are also slowdowns in the Hamptons, from Southampton to Montauk, according to Waze reports.

Motorists will see closures due to the Port Jefferson Fourth of July parade on Saturday between 9 a.m. and 1 p.m., according to the Suffolk County Police Department.

Main Street will be closed from North Country Road to Broadway. Broadway will be closed from Main Street to California Avenue. Barnum Avenue will be closed from Broadway to Main Street.

Motorists are advised to use alternate routes.

The test represents the latest effort to combat Lyme, the most common tick-borne disease in the United States. NewsdayTV's Ken Buffa spoke with local experts on what you can do to prevent this disease. Credit: Newsday Studios; File Footage

'You have to check your entire body' The test represents the latest effort to combat Lyme, the most common tick-borne disease in the United States. NewsdayTV's Ken Buffa spoke with local experts on what you can do to prevent this disease.

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