Alternative Delivery projects
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Alternative Delivery projects


TxDOT has two different delivery methods available for the procurement of alternative delivery projects.

These contracting methods are awarded based on a best-value approach (price, qualifications of firm and project approach) and combine various components of a project’s implementation into one contract. Design-Build (DB) Contracts and Comprehensive Development Agreements (CDAs) allow for the expedited project delivery through the concurrent design and construction of a project.

Contract types

Design-Build Contracts

DB contracts allow for design, construction, utility relocation, and maintenance to occur simultanteously under a single contract. The contract does not include financial participation from the private sector, a long-term lease, or operation of the facility.

Comprehensive Development Agreements

CDAs allow for design, construction, utility relocation and maintenance to occur simultaneously under a single contract and may include financial participation from the private sector and a long-term lease or operation of the facility. CDAs can be concessions or DBs. TxDOT has five such projects in operation or under construction but the broad authority to enter into additional CDAs expired in 2017.


Access programmatic documents and conflict of interest policies


TxDOT's traditional method of building transportation projects is known as design-bid-build. The project is designed and then put up for bid by contractors. For design-build projects, the firm that provides the best-value bid (based on evaluation of cost, qualification of firms and project approach) is selected to design and construct the project.

Future projects

TxDOT continues to analyze projects to determine which would be most suitable for the design-build delivery method. A quarterly report illustrates TxDOT’s planned procurements for the next five to ten years.

The Alternative Delivery Division provides support activities for the program and performs procurement of alternative delivery projects.

Pre-procurement projects

Prior to beginning a procurement project, the Alternative Delivery Division collaborates with districts to advance project development activities and information to enhance the procurement process.

The process allows TxDOT to gain a better understanding of project development, including funding, cost, environmental factors, schematic design as well as ROW and railroad coordination.

SH 183 Expansion
Grand Parkway segment B map
SH 99 Grand Pkwy Seg B-1

Executed projects

(CDAs & DBs)
Date signed Project Developer/DB contractor District Project type CCSJ Project ID Project Sheet
08/16/23 I-35 Northeast Expansion South Lone Star Constructors, NEX San Antonio Design-Build 0017-10-168 A00006479  
02/24/22 Southeast Connector South-Point Constructors Fort Worth Design-Build 0008-13-125 A00007509  
09/17/21 I-35E Phase 2 Lone Star Constructors Dallas Design-Build 0196-03-274 A00062253  
07/22/21 I-35 Northeast Expansion Central Alamo NEX Construction, LLC San Antonio Design-Build 0016-06-047 A00006206  
08/10/20 Oak Hill Parkway Colorado River Constructors Austin Design-Build 0113-08-060 A00016455  
08/22/19 I-2/I-69C Interchanges Dragados-Pulice J.V. Pharr Design-Build 0039-17-175 A00070178  
08/22/19 I-635 LBJ East Pegasus Link Constructors Dallas Design-Build 2374-01-137 A00054742  
10/03/17 SH 249 Extension Williams Brothers Construction Co. Bryan and Houston Design-Build 3635-02-002 A00119923  
06/30/17 SH 99 Grand Parkway Segments H, I-1 and I-2 Grand Parkway Infrastructure, LLC Beaumont and Houston Design-Build 3510-07-003 A00117302  
06/30/17 Southern Gateway Pegasus Link Constructors Dallas Design-Build 0442-02-088 A00028576  
03/04/16 SH 288 Toll Lanes Project in Harris County Blueridge Transportation Group Houston CDA Concession 0598-01-090 A00094000  
09/28/15 US 181 Harbor Bridge Replacement Flatiron-Dragados USA, J.V. Corpus Christi CDA Design-Build 0101-06-095 A00077018  
05/15/15 SH 360 Project Lane - Abrams Joint Venture Fort Worth Design-Build 2266-02-136 A00054523 Project Sheet
11/20/14 Midtown Express - SH 183 Managed Lanes SouthGate Mobility Partners, LLC Dallas and Fort Worth CDA Design-Build 0094-03-065 A00013164  
08/29/14 SH 71 Express Toll Lanes McCarthy Building Companies, Inc. Austin Design-Build 0265-01-110 A00021553 Project Sheet
08/22/14 Loop 375 Border Highway West Extension Abrams – Kiewit Joint Venture El Paso CDA Design-Build 2552-04-027 A00053539 Project Sheet
02/10/14 Energy Sector Roadway Repair Project ESR2P Builders, LLC Corpus Christi, Laredo, San Antonio, and Yoakum Design-Build 0237-01-018 A00081136  
12/05/13 Loop 1604 Western Extension Project Williams Brothers Construction Company, Inc. San Antonio Design-Build 2452-01-036 A00054243  
07/30/13 US 77 Upgrade from Kingsville to Driscoll Austin-Bay, J.V. Corpus Christi Design-Build 0102-03-081 A00076122  
05/17/13 I-35E Managed Lanes AGL Constructors Dallas CDA Design-Build 0196-02-068 A00019205  
03/22/13 SH 99 Grand Parkway Segments F-1, F-2, and G Zachry-Odebrecht Houston CDA Design-Build 0912-00-471 A00099484  
03/01/13 North Tarrant Express / I-35W NTE Mobility Partners Segments 3, LLC Fort Worth CDA Concession 0014-16-179 A00007311  
02/20/13 Horseshoe Project Pegasus Link Constructors Dallas Design-Build 1068-04-116 A00044972  
10/06/09 DFW Connector NorthGate Constructors, J.V. Dallas and Fort Worth CDA Design-Build 0353-03-059 A00023749  
09/04/09 LBJ-635 Express Corridor LBJ Infrastructure Group Dallas CDA Concession 2374-01-068 A00054474  
06/23/09 North Tarrant Express NTE Mobility Partners Fort Worth CDA Concession 0008-14-058 A00007962  
03/22/07 SH 130 (Seg. 5 & 6) SH 130 Concession Company, LLC Austin and San Antonio CDA Concession 3583-02-003 A00055843