After more than two years of construction, the next segments of the Grand Parkway are poised to open.

But whatever you do, don’t head out to cruise the tollway just yet.

Final inspections are continuing Friday, and crews are expected to begin moving barricades and construction barrels to start opening the 24-mile stretch from U.S. 290 to Interstate 45, said Texas Department of Transportation spokeswoman Raquelle Lewis.

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The tollway will open once all of those inspections and checks are complete and the barriers are moved. That could take hours, Lewis said, or well into the night.

“We really don’t want someone heading out there until everything is out of the way,” Lewis said, explaining that while the opening is imminent, crews are “working in real-time.”

Lewis said the only assurance she could give at this point is the road would open Saturday, likely by 5 a.m.

For residents in the area, it has been a long wait for the lanes, considered crucial to solving local transportation problems brought on by rapid development and a lack of convenient road access.

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Other challenges remain. Additional growth means more people wanting to get to the parkway, requiring a rethinking of how roads intersect. Harris County voters in November approved $700 million in bonds for new road projects, and county officials are determining how to spend it.

Precinct 4 Commissioner Jack Cagle, a supporter of the parkway, has said improvements to Gosling are likely to handle increased demand, as well as a new Kuykendahl bridge spanning Cypress Creek.

“We can put on the afterburners to push it,” Cagle said of the road bond’s effect on nearby streets.

The work on the Grand Parkway isn’t finished. An additional 14.8 miles of tollway is expected to open in 10-12 weeks from Interstate 45 to U.S. 59 north of Kingwood.