The Utah Department of Transportation is warning about delays of 30 minutes or more this weekend on northbound lanes of Interstate 15 in Sandy.

Crews plan to reduce that side of the freeway to two lanes between 11400 South and 9400 South beginning Saturday at 9 p.m. through Monday at 5 a.m.

The lane closures will allow work on a bridge at 10000 South (Sego Lily Drive). UDOT expects that work will require similar closures on up to two additional weekends.

This bridge work is part of the I-15 Northbound project, which is widening I-15 to add a new travel lane from Bangerter Highway to 9400 South and constructing a collector-distributor system from 9400 South to I-215.

The new collector/distributor system is similar to one between 900 South and 2100 South in Salt Lake City, with a three-lane freeway section separated from the I-15 travel lanes by a concrete barrier. It is designed to reduce heavy congestion in the area now caused by cars maneuvering to cross lanes to enter and exit the freeway in the area.

The collector-distributor system, along with most of the new northbound lane, is scheduled to open later this year, with the overall project finishing next summer. This project is expected to reduce crashes in the area by nearly 40% and reduce northbound travel times by 50%.

Construction schedules are weather-dependent and subject to change. Updated information is available online at udottraffic.utah.gov or on the UDOT Traffic app.