PHOENIX — The Arizona Department of Transportation will lift some of the traffic restrictions on Interstate 15 through the Virgin River Gorge prior to the Independence Day holiday weekend (July 4-6), but is advising motorists to expect additional traffic through the weekend and be aware of the existing work zones.

With limited alternate routes available due to the remote location of the I-15 Virgin River Gorge corridor, ADOT is urging drivers traveling between Mesquite, Nevada, and St. George, Utah, to plan ahead for possible delays in both directions through the work zones due to heavier traffic volume throughout the holiday weekend.

Considerable progress has been made to date on ADOT’s multiple bridge projects along Arizona’s I-15 corridor. The $2.8 million improvement project to upgrade the surfaces of Bridge No. 3 and No. 7 (mileposts 13 and 22) is nearly complete. One traffic restriction remains on the northbound side of Bridge No. 3, which is narrowed to one lane through the work zone.

The $27 million project to reconstruct Bridge No. 6 (milepost 16), located approximately 20 miles south of St. George, is also ongoing and the highway is currently narrowed to one lane in each direction through the work zone until the project is completed in 2016. This significant project includes the replacement of the bridge’s superstructure (girders, deck and railings), as well as widening the roadway through the narrow passage of the gorge.