Before a project is built, a study must be done to determine if it will fill a transportation need, will not negatively impact the surrounding area and fits the department's overall plan. During the study phase, potential projects are analyzed to determine if they are cost-effective while also efficiently improving mobility. 

Location Project Phase Description
Angelina County US 59 Upgrade Redland (Future I-69) Study Improvements to bring US 59 up to interstate standards - proposed northbound and southbound frontage roads along US 59 between SL 287 and FM 2021 in Redland
Angelina County US 59 Diboll Relief Route (Future I-69)
Preliminary Design Improvements to bring US 59 to interstate standards - proposed 8-mile new location relief route near the city of Diboll
Angelina County US 59 and FM 819 On Hold Proposed overpass to the intersection of US 59 and FM 819 in Lufkin
Nacogdoches County Loop 224 (N. Stallings Drive)
On Hold Widen to a four-lane roadway from US 59 to Business US 59 in Nacogdoches
Nacogdoches County US 59/SL 224 South Interchange (Future I-69)
Preliminary Design Improvements to bring US 59  up to interstate standards - proposed direct connector and northbound and southbound frontage roads along US 59 from Spradley Street to the intersection of SH 7 West and SL 224 in Nacogdoches
Polk County US 59 Corrigan Relief Route (Future I-69)
Preliminary Design Improvements to bring US 59 up to interstate standards - proposed  6.5-mile new location relief route near the city of Corrigan
San Jacinto/Liberty Counties US 59 Upgrade Shepherd to Cleveland (Future I-69) Study
Improvements to bring US 59 up to interstate standards - proposed northbound and southbound frontage roads along US 59 between Shepherd and Cleveland
Various Counties Interstate 69 Study Provides information regarding the development of Interstate 69 in various counties