Relevant links:
- City of Houston: North Houston Highway Improvement Project.
- TX Dot: North Houston Highway Improvement Project (NHHIP) - Segment 3: I-69 (SH 288 to I-45S) Design-Build Project.
- H-GAC: North Houston Highway Improvement Project.
- GHP: North Houston Highway Improvement Project.
- Dept. of Transportation: Notice of Final Federal Agency Actions on the North Houston Highway Improvement Project (NHHIP) in Texas.