Editor's note: This story has been updated to correct the timeline of the Alma Drive construction. Officials have not set a start date for the project's second phase.

1. Alma Drive improvements

Construction is nearly complete on the first phase of the Alma Drive improvement project at the intersection of Alma Drive and Exchange Parkway. The start date for the rest of the project, which extends from SH 121 to Hedgcoxe Road, has yet to be scheduled. The project proposes to widen Alma Drive to six lanes in areas where four- or five-lane sections exist. As a result, various other improvements and modifications to existing infrastructure would be necessary, including landscaping improvements, signal enhancements, turn lane additions and street lighting placement/replacement.

Timeline: TBD Cost: $5.5 million Funding sources: city of Allen, Collin County

2. Stacy Road expansion

The roadway is under construction to reconstruct the two-lane rural highway into a four-lane divided urban roadway with left-turn lanes, a median and sidewalks. The project extends from Greenville Avenue to Country Club Road.

Timeline: March 2016-spring 2018 Cost: $15.7 million Funding sources: Texas Department of Transportation

3. FM 2551/Angel Parkway

This roadway is in the design phase to reconstruct and widen the roadway from a two-lane rural roadway to a six-lane urban divided roadway. The project extends from FM 2514 in the city of Parker to FM 2170 in Allen.

Timeline: construction to begin in 2018 Cost: $381.5 million Funding sources: TxDOT

4. Ridgeview Drive extension

The first phase of the Ridgeview Drive extension between Alma Drive and Stacy Road in Allen opened to traffic May 5. The second phase of the Ridgeview Drive extension—from Watters Road to US 75—has not been scheduled. The city is waiting for the area to be developed. Part of the project also includes a Ridgeview Drive overpass on US 75, which will be built by TxDOT.

Timeline: TBA (Watters Road to US 75) Cost: TBA Funding sources: TBA