Depiction of the final interchange at PGBT and SH-78, south of the Firewheel Town Center.
Graphic: modified version of NTTA art work

 
Anyone turning toward Downtown from PGBT (SH-190) recently has discovered the ramp closed and a detour on the other side of Lavon Ave (SH-78). NTTA says: All eastbound PGBT traffic going north or south onto State Highway SH 78 in Garland are now using the same exit ramp. Northbound traffic will continue to utilize the existing loop ramp. Southbound traffic now utilizes temporary asphalt pavement, where they will be able to turn left (south) onto SH 78 at an intersection where a temporary signal has been installed. This traffic pattern could last through mid-March.
 
Joining the existing turnpike to the new Eastern Extension and constructing the interchange at Lavon Ave will involve grade changes and several new lanes. As depicted above,

• work is currently underway to excavate under the Lavon overpass to allow two new connecting lanes,
• grade changes necessary to connect the old and new sections is forcing modifications to the existing ramps,
• on the northside, two westbound entrances will be constructed, one east of Crist Rd and another west, and
• on the southside, a new eastbound entrance will cross over the frontage road and the exit ramp to Firewheel Pkwy.

It will be nice when the work is completed (and I use that in both contexts).