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. 


May 3 - 8 (7PM - 7AM)

Left lane closure on SH 99 northbound and southbound near IH 10


May 3 - 8 (7AM - 7PM)

Lane reduction on Fisher Road between SH 99 northbound and southbound

May 3 - 8 (7AM - 7PM)

Lane reduction on FM 1405 between SH 99 eastbound and westbound

May 3 & 10 (6AM - 6PM)

Kilgore Parkway closed between SH 99 eastbound and westbound travel lanes


May 5 (7PM - 5AM)

SH 146 northbound ramp closed at the Wyoming Street intersection along Business 146 westbound. Motorists looking to travel northbound will be detoured via SH 146 southbound


 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


May 3 - 8  (6AM - 7PM)

Flagging operation on CR 602 and CR 603

May 3 - 8 (7AM - 5PM)

Flagging operation on FM 686 between CR 621 and CR 622

May 3 - 8 (7AM - 5PM)

US 90 reduced by 1 lane (eastbound and westbound) in each direction near County Road 491

May 3 - 8 (8AM - 5PM)

Flagging operation on FM 1960 near CR 610

May 3 - 8 (7AM - 6PM)

Flagging operation on County Road 622

May 3 - 8 (7AM - 6PM)

Flagging operation on FM 1413


Ongoing (24hrs)

CR 610 closed at FM 1960

Mont Belvieu

May 3 - 8  (24 hrs)

Single right lane closure on 146 southbound and northbound near Eagle Drive


May 3 - 8 (9AM - 4PM)

Flagging operations on FM 565 near City Hall

May 7 & 8 (7PM - 5AM)

This two night operation will closed all through traffic on FM 565 between Main Street and Eagle Drive. Local access will be permitted. Motorists will be detoured to the IH 10 frontage road to travel around the closure.

New Caney


May 3 - 8 (7AM - 5PM)

Flagging operation on FM 1485 between Willaby Road and Stephens Forest Road


May 3 - 8 (7AM - 5PM)

Flagging operation on FM 1485 near 5 Mile Road

May 3 - 8 (7AM  - 5PM)

Flagging operation on Baptist Encampment Roadway

Ongoing (24 hrs)

Residents of Monday Hargrove will have their access modified for the remainder of the project. On Saturday, April 17, residents will need to access their property via Willaby Road, onto the new frontage road, and on to Monday Hargrove. GRAPHIC

Ongoing (24 hrs)

Ada Lane closed at the new SH 99 westbound frontage road.

Ongoing (24hrs)

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




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

Contact Us

Thank you for your message. Our team will be in touch with you shortly.

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.