"Everything is running smoothing," Porter said. "We have just had to change our routes. We'll just avoid the area."

Victoria Price, general manager at the Bob Evans on Corporate Boulevard, said some customers have griped about the traffic getting to the restaurant.

"It most definitely has affected our sales today," Price said Saturday. "We'll hope for the best, that we won't lose too many sales."

At Hoyts West Nursery Cinemas on West Nursery Road, manager Liane Sweeney said it was too early to tell how much impact the construction may have on business.

"We have signs posted on the front doors about the alternative routes," Sweeney said. "We've been trying to let them know ahead of time. Hopefully, that helps."

Officials selected the innovative construction procedure, known as the "bridge on wheels" swap, as a way to save time and money on the repairs.

Replacing the West Nursery Road bridges has been planned for about six years. About 121,000 vehicles travel that section of the parkway and about 22,000 take West Nursery Road daily.

For updates, visit md511.org, or follow SHA on Twitter @mdsha or on Facebook.