Weekend road construction could cause some slowdowns Drivers on Alamo Ranch Parkway and I-10 will encounter construction crews Published: SAN ANTONIO – Work on projects old and new will continue this weekend. Here are a few highlights: The intersection of Alamo Ranch Parkway and Westwood Loop will be closed Friday night through Monday morning for bridge work. Crews are working on a project to improve traffic flow in the area and plan to add a new overpass bridge connecting westbound Alamo Ranch Parkway and Westwood Loop. On Loop 1604, work crews will be installing signs this weekend between U.S. 281 and Stone Oak Parkway, so there will be alternating lane closures. Work on 1604 on the Northwest Side will resume on Sunday night, with lane closures for barrier setting and other construction work.