SH 99 Grand Parkway

Segments H, I-1 & I-2

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Construction Commenced

Completion Date

Miles of New Highway

First Segment (D) of

SH-99 opened


Reconstructed Bridges


Parcels Acquired


The vision for mobility using a “highway loop” around Houston dates back to the early 1960s. 


More than 50 years later, this vision is becoming a reality with the design and construction of the remaining segments of SH 99 Grand Parkway, Segments H, I-1 & I-2. At 180+ miles, this circumferential scenic highway will be the longest highway loop in the United States, traversing seven counties and encircling the Greater Houston region, which is the fourth-most populous city in the United States.

In March 2017, the Texas Department of Transportation awarded the $855 million design-build construction contract for Segments H, I-1 & I-2 to Grand Parkway Infrastructure, a joint venture led by global infrastructure leader Ferrovial Agroman, along with Webber LLC and Granite Construction Inc.

Construction along the corridor, stretching from the US 59/IH 69 interchange to the north and SH 146 in Baytown to the south, commenced in 2018. Construction activities are currently underway, including bridge construction, roadway paving, right-of-way acquisition with property owners, and utility relocations.

Fast Facts:


  • Segments H, I-1 & I-2 represent 52.8 miles of the 184 mile SH 99/Grand Parkway loop

  • Acquisition of easements through 375+ land parcels

  • 80 new or substantially reconstructed bridges will be built

  • The first segment – Segment D – of SH 99/Grand Parkway opened in August 1994; the most recent segment – Segment G – opened in March 2016

Project Maps

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Traffic Impacts

As construction continues, we will post information about upcoming traffic impacts, including lane, ramp, and bridge closures. Please note that all traffic impacts are subject to change. 


October 19 - 24 (24hrs)

Left lane closure on SH 99 eastbound and westbound east and west of Fisher Road

October 19 - 24 (7:00AM - 7:00PM)

Right shoulder closure on SH 99 eastbound east of Fisher Road

October 19 - 24 (7:00AM - 7:00PM)

Right shoulder closure on SH 99 southbound just south of FM 565

October 20, 21, and 23 (8:00PM - 5:00AM)

SH 146 northbound exit to Business 146 will be closed

October 20 (8:00PM - 5:00AM)

Business 146 eastbound closed between Lee Drive and Business 146 northbound

October 21 (8:00PM - 5:00AM)

Business 146 eastbound closed between Wyoming Street and Lee Drive

October 23 (5:00AM - 5:00PM)

Fisher Road closed between SH 99 eastbound and westbound travel lanes

Ongoing (24hrs)

U-turn closed at SH 99 westbound at Business 146 eastbound

Ongoing (24hrs)

The eastbound and westbound SH 99 U-turns closed at FM 1405

Ongoing (24hrs)

U-turn closed at SH 99 eastbound between FM 1405 and Fisher Road

Ongoing (24hrs)

Wismer Drive (between Business 146 eastbound and westbound) closed


October 19 - 24 (7:00AM - 7:00PM)

Flagging operation on FM 686 from CR 621 to CR 622

October 19 - 24  (8:00AM - 5:00PM)

Flagging operation on northbound and southbound FM 1960 near CR 610

October 19 - 24 (7:00AM - 5:00PM)

Flagging operation on CR 621

October 19 - 24 (6:00AM - 7:00PM)

Flagging operation on CR 602

October 19 - 24 (6:00AM - 7:00PM)

Flagging operation on CR 603 

October 19 - 24 (8:00AM - 5:00PM)

US 90 westbound right lane closure near CR 491

October 19 - 24 (8:00AM - 5:00PM)

Right lane on US 90 eastbound near CR 491 will be closed

Ongoing (24hrs)

CR 610 closed at FM 1960

Mont Belvieu

October 19 - 24 (24hrs)

Right lane closure SH 146 southbound and northbound near Eagle Drive

October 19 - 24 (7:00AM - 7:00PM)

SH 99 northbound and southbound left lane closed near IH 10

October 19 - 24 (9:00AM - 4:00PM & 6:00PM - 5:00AM)

Flagging operation on FM 565 near Mont Belvieu City Hall

October 24 (7:00PM - 8:00AM)

IH 10 main lanes and frontage roads will be impacted as crews pour concrete on the new bridge that travels over IH 10. Click here for details.

New Caney

October 19 - 24 (7:00AM - 6:00PM)

Flagging operation on Forest Drive near FM 1485

October 22 - 23 (8:00PM - 5:00AM)

Loop 494 closed between Community Drive and Eagle Drive

Ongoing (24hrs)

The eastbound and westbound SH 99 U-turns closed at Valley Ranch Parkway

Ongoing (24hrs)

The on-ramp to northbound IH 69/ US 59 at Community Drive closed

Ongoing (24hrs)

The off-ramp from southbound I-69/US 59 to FM 1314 exit closed.




For any inquiries, questions or concerns, please call 877-553-7374, email or fill out the form below.

Contact Us

Grand Parkway Infrastructure Office

8811 F.M. 1960 Bypass Road West

4th Floor
Humble, TX 77338

Tel: 877-553-7374

Hours of Operation: 8:00AM - 6:00PM  (Monday thru Friday)  

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Here at GPI, we're always looking for great people with great skills. For information on what jobs are available, please view our current listings. If you have any questions related to employment opportunities please email us at  or call 832-412-4633.


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