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HARMAN ENGINEERING CONSULTANT, LP
Home
About Us
Services
PROJECTS
  • CURRENT PROJECTS
Contact Us
More
  • Home
  • About Us
  • Services
  • PROJECTS
    • CURRENT PROJECTS
  • Contact Us
  • Home
  • About Us
  • Services
  • PROJECTS
    • CURRENT PROJECTS
  • Contact Us

PROJECTS

SPUR 399 EXTENSION

US 380 FREEWAY EXPANSION - PS&E

US 380 FREEWAY EXPANSION - PS&E

Map showing route near McKinney National Airport with two marked points.

 The TxDOT Spur 399 extension project is a massive, roughly $1 billion initiative in Collin County (McKinney) to build an eight-lane freeway loop connecting US 75 to US 380 around the east side of McKinney National Airport.

Spur 399 is classified as a freeway from its current terminus near the junction of US 75/SRT-SH 121 along the Common Alignment. From the end of the Common Alignment, SPUR 399 would continue east on new location crossing Airport Drive/Old Mill Road and continuing further east and south around the southern end of the Airport, then turning north near CR 317 to connect to US 380. As the alignment continues, frontage and main lanes would be added until its terminus at US 380. 


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US 380 FREEWAY EXPANSION - PS&E

US 380 FREEWAY EXPANSION - PS&E

US 380 FREEWAY EXPANSION - PS&E

Engineer wearing a yellow helmet working on a detailed blueprint.








COMING SOON!












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SCHEMATIC & ENV PLANNING

US 380 FREEWAY EXPANSION - PS&E

SCHEMATIC & ENV PLANNING

Construction worker examining site plans at a construction site.








COMING SOON!












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