EXPERTISE

LTRA was chosen by the TxDOT Paris District to lead the schematic design, environmental permitting, and public involvement for one of the largest highway expansion projects in NE Texas. LTRA split the IH 30 corridor into separate schematics with limits from FM 2642 to Monty Stratton (13 miles) and from Monty Stratton to FM 513 (12 miles). The objective of the IH 30 project was to improve safety, enhance mobility, and reduce traffic congestion on IH 30 and intersecting roadways. Numerous interchange reconstructions were designed with the project in conjunction with ramp reversals from diamond to X ramp configurations. Multiple innovative interchange alternatives were considered, including the Single Point Urban Interchange (SPUI) selected for the IH 30 – US 69 interchange. LTRA communicated with multiple key stakeholders to ensure key design issues were incorporated into the schematic.

LTRA was the lead firm for preparing construction plans for double tracking the Trinity Railway Express (TRE) line from IH 35W to east of S. Sylvania Ave. LTRA prepared the civil sheets including the demolition plan, track plan and profile sheets, typical sections, drainage area map and calculations, guideway drainage plan and profile sheets, hike and bike revisions, and temporary erosion control. Railroad bridges over a creek, North South Freeway, West Fork of the Trinity River and Sylvania Avenue were designed with the project. The plans included details for rehabilitation of the existing trestle bridge over West Fork Trinity River and a new steel through plate girder bridge spanning the river. During project development LTRA coordinated with TRE, City of Fort Worth, TxDOT, COE and the adjacent designer of 35W corridor. LTRA also captured Mobile LiDAR data from a High Rail Vehicle and produced a topographic feature on the existing trestle bridge and its super structure to support the bridge rehabilitation. Adjacent topographic features were extracted from the LiDAR cloud data to show a complete 3D model of the existing bridge and the surrounding area of the Trinity River bottom.

LTRA was part of the Design Build team working in collaboration with Dallas Area Rapid Transit (DART) to design the last section of the Orange line from Belt Line Rd to Terminal A Station, inside DFW International Airport. LTRA was responsible for the design of the Civil, Demolition, Drainage, and Utility Relocations for segment 3. Project scope included the design and reconstruction of a four-lane major arterial, North Airfield Drive, from west of Freeport Parkway to Grapevine Creek. LTRA developed paving and drainage designs, which included roadway geometrics, cross sections, and storm drain design. LTRA was also responsible for SUE on Sections 1 and 2 of the Orange Line through Irving, generating Level B SUE for water, wastewater, telephone, fiber optic cable, gas, pipelines, traffic signal, and electric utilities. LTRA worked closely with 19 different utility companies, municipalities and DART to develop a Utility Conflict Matrix that was eventually reduced to only 134 conflicts with the new location rail line through proactive coordination. LTRA supported the successful delivery of this significant regional transit project that has increased ridership on DART and spurred significant transit-oriented development around the new stations.

LTRA was part of the design-build team responsible for providing supplemental surveying services, utility design, SUE, and civil design for the 26-mile commuter rail project from DFW Airport to Plano. LTRA was responsible for the civil and drainage design of 11 miles of Segment 3 of the project from the Dallas North Tollway in Dallas to Shiloh Road in Plano. Project scope included civil design packages at 28 rail crossing locations in the Cities of Dallas, Richardson and Plano. Responsibilities also included laying out track panels and coordinating with system elements for gate locations and sidewalk escape paths. Drainage design included preparing hydrology and hydraulics for the 11-mile corridor and preparing Hydraulic Technical Memos for 5 FEMA Zone AE stream crossings. LTRA also developed relocation and accommodation plans for 43 water lines and 22 wastewater lines spanning seven cities, Municipal Utility Districts (MUDs), and Special Utility Districts (SUDs). LTRA coordinated closely with each city and utility owner to ensure compliance with specific design criteria and adjusted designs as needed based on their feedback. LTRA supported the successful delivery of this significant regional transit project.

The US 380 Bypass is a $2B freeway project that will improve east-west mobility and provide additional capacity through Collin County, one of the fastest-growing areas in North Texas. The project extends from the Dallas North Tollway in Frisco to east of McKinney and requires significant right-of-way acquisition to support construction of the new alignment. LTRA served as a key survey team member supporting TxDOT’s right-of-way mapping and acquisition efforts. Our team established 20 primary survey control monuments along the entire project alignment and prepared 45 signed and sealed parcel plats and legal descriptions. To help TxDOT meet aggressive acquisition goals, LTRA also completed an additional 31 parcels beyond the original assignment. The project required navigating tight schedules, resolving right-of-entry issues, and coordinating field work across an active and rapidly changing corridor. Using terrestrial and mobile LiDAR technologies, LTRA delivered accurate, high-quality survey data that supported the advancement of this important regional transportation project.

LTRA served as the prime provider for TxDOT’s Statewide Bridge Clearance Inventory Surveys, delivering critical data to support the safety and planning of the state’s roadway network. The project involved surveying more than 5,400 bridges across 13 TxDOT districts and 123 counties in North Texas, collecting accurate horizontal and vertical clearance measurements for every bridge opening. LTRA utilized the Leica Pegasus mobile mapping system to perform Mobile LiDAR scans of each structure, with point cloud data processed using MicroStation and TopoDOT software. The final deliverable included a comprehensive GIS database covering over 13,000 openings, each with approximately 60 recorded attributes. Our team also managed data collection planning, coordinated work across multiple regions, and implemented rigorous QA/QC processes to ensure data accuracy. LTRA’s ability to manage large-scale survey projects and deliver high-quality geospatial data contributed directly to TxDOT’s statewide bridge inventory and planning efforts.

LTRA performed Mobile LiDAR scanning in support of the Taxiway Bravo rehabilitation project at Dallas Love Field. The scope included scanning portions of Runway 18-36, Taxiway A, Taxiway B, Taxiway D, and the Reeves Apron. Field work was conducted during nighttime closures and coordinated with on-site escorts to ensure safe operations alongside other ongoing maintenance activities. Deliverables included CAD files delineating hard pavement edges, distinguishing between concrete and asphalt surfaces, all concrete joints, pavement markings, and airfield lighting within the scanned limits. An elevation grid was also provided at 2-foot intervals across the pavement surface to support design and rehabilitation planning.

DFW Airport’s International Parkway was the focus of a major infrastructure improvement program to modernize terminal access and enhance roadway safety. As part of this effort, LTRA provided critical design and topographic survey services to support the reconstruction of the main roadway and terminal ramps. LTRA’s survey team utilized advanced terrestrial and mobile LiDAR technologies to capture precise data quickly and efficiently, allowing work to progress without disrupting traffic flow to the airport terminals. We worked closely with the design team to prioritize key deliverables on an accelerated schedule and supported utility and Subsurface Utility Engineering (SUE) efforts throughout the project. The survey data provided by LTRA contributed to the safe and efficient delivery of this important airport corridor improvement.

The DART Silver Line is a $2B+ light rail project that will connect DFW Airport to Plano, improving regional mobility and providing new transit options across North Texas. LTRA provided critical design and topographic survey services to support this major transportation investment. Our survey team confirmed existing project control, gathered SUE data, and conducted detailed design surveys at intersection crossings, stream crossings, and proposed station locations. With an aggressive project schedule, LTRA deployed multiple field crews and office teams and leveraged advanced technologies including terrestrial and mobile LiDAR to accelerate data collection and delivery. Close coordination with the design team allowed us to prioritize key deliverables and maintain project momentum. Our work provided the high-accuracy data needed to support the safe and efficient design of this important regional rail corridor.

TxDOT selected LTRA to perform comprehensive Subsurface Utility Engineering (SUE) services along the high-traffic SH 114 corridor east of DFW Airport. The project supported critical roadway improvements in a dense utility environment where accurate mapping was essential for design and construction. LTRA conducted extensive Quality Level B SUE investigations, vault mapping, and overhead utility mapping across the corridor. One of the project’s primary challenges was coordinating utility data for 13 different communication providers. Our team performed detailed records research, designated toneable utilities in the field, and developed precise CADD files to document over 137,000 linear feet of existing utilities. The result was a complete and verified set of signed and sealed utility plans that provided TxDOT with the clarity needed to advance this complex corridor project.

The North Houston Highway Improvement Project is a major infrastructure program aimed at improving mobility, safety, and connectivity along key sections of I-45, I-10, and US 59/I-69 in central Houston. LTRA provided Subsurface Utility Engineering (SUE) services throughout multiple project segments, supporting the successful design and construction of this complex highway corridor. Our team conducted extensive utility investigations and mapping to help mitigate risk, minimize delays, and ensure safe delivery of the project. The effort required a comprehensive SUE approach that included 3D utility scanning, in-depth records research, and careful coordination with stakeholders. Throughout the project, LTRA worked to maintain existing traffic flow and public access while meeting the aggressive project schedule. Our contributions helped support the delivery of this high-profile transportation improvement for the region.

General contractors rely on LTRA’s Subsurface Utility Engineering (SUE) expertise to support a wide range of fast-paced construction efforts, including roadway infrastructure projects and new or existing building renovations. Accurate underground utility data is critical to keeping construction activities moving safely and efficiently, and our team delivers dependable SUE services that reduce risk, avoid conflicts, and support informed decision-making in the field. We have partnered with contractors on everything from small urban improvements to large, complex developments, providing utility investigations and mapping during both preconstruction and active construction phases. LTRA mobilizes quickly and works in challenging environments such as schools, hospitals, and active commercial areas where access, safety, and coordination are key. We also assist with utility connections in public rights-of-way, including permitting, concrete coring, lane closures, and inspections. Our responsiveness and precision help contractors minimize disruptions and meet project schedules with greater confidence.

LTRA played a critical role in the $200M+ roadway improvement project at DFW Airport, supporting the construction of new frontage roads connecting the North Express Parking area to Terminal E. As a key member of the project team, LTRA provided expedited Subsurface Utility Engineering (SUE) investigations and utility coordination to support the fast-paced design-build delivery. Given the complex underground environment of the airport, our team conducted extensive 3D utility scanning, performed additional records research to verify service statuses, and maintained active traffic flow during the investigations. By delivering accurate utility data on an aggressive schedule, LTRA helped keep this vital infrastructure upgrade on track and ultimately improving access to one of the nation’s busiest airports.

LTRA is the prime consultant for this 38-mile schematic project for the TxDOT San Angelo District from the Concho County Line to Junction, TX. LTRA completed schematic design, environmental permitting, traffic analysis, and public involvement for the project. US 83 is a part of the “Ports to Forts” Corridor which will be designated as Interstate 14, a new multi-state interstate highway to connect major military bases in the southern US. The project was phased to widen the existing 2-lane rural highway to a 4-lane divided highway, with a typical section and roadway geometry that will accommodate future conversion of US 83 to a controlled access interstate. Interchange alternatives were considered for multiple rural interchange locations along US 83. LTRA engaged in extensive public involvement for the project, incorporating public feedback into the schematic process.

LTRA was chosen by the TxDOT Dallas District to lead the schematic design, environmental permitting, and public involvement for this critical freeway link between Dallas and DFW Airport. Project scope included preliminary design for the reconstruction and expansion of 7 miles of SH 114 from International Parkway to Riverside Drive with a 6 to 8 lane freeway section with one dedicated managed lane in each direction. LTRA developed complex geometrics for a new 5-level direct connector interchange between SH 114 and the President George Bush Turnpike (PGBT). The highly urbanized corridor and existing dense commercial development added to project complexity. The project corridor spanned multiple municipalities and required coordination with Irving, Las Colinas, DART, DFW Airport and multiple major stakeholders and corporations.

LTRA is leading the preliminary design for Loop 1604 for the TxDOT San Antonio District. The project includes developing the schematic design, environmental permitting, and public involvement from Military Dr to IH 35 on the southwest side of San Antonio. This portion of the Loop 1604 corridor is located along one of the fastest growing areas in San Antonio. For the section north of US 90, the project involves an expansion from a 4-lane rural section to a full 8-lane freeway section that will include 3-lane frontage roads. South of US 90, the schematic will accommodate widening the existing 2-lane section with an Interim project with considerations for future Ultimate conversion to a freeway typical section. The design will also include multilevel interchanges at both US 90 and IH 35.

LTRA was chosen by TxDOT Dallas District and Denton County to lead a major regional mobility and development project in North Texas by developing both the schematic and PS&E designs for FM 1385. This major project upgrades 12.1-miles of existing 2-lane rural roadway to a 6-lane divided urban typical section from US 380 in Prosper, TX to FM 455 in Pilot Point, TX. LTRA worked with various cities (Pilot Point, Prosper, Celina, Aubrey), Denton County, TxDOT, and multiple developers to accommodate a constantly changing environment in a rapidly developing sector of Denton County. LTRA identified and resolved conflicts with several major regional utilities by refining the roadway geometry, cutting months off the schedule and reducing utility relocation costs by several million dollars. LTRA divided the FM 1385 corridor into three separate construction packages to accommodate TxDOT funding constraints. The FM 1385 project will improve safety and reduce delays on an important regional arterial in Denton County.

LTRA was chosen by the City of Dallas to lead feasibility, schematic, and PS&E design for this 0.7-mile, 4-lane undivided section through southeast Dallas, Texas. LTRA was tasked with developing several route alternatives and developing a schematic and construction drawings for the preferred alternative. The Wheatland project was a joint project with the City of Dallas leading the development process and TxDOT providing construction funding and letting Wheatland Rd as a local let project. LTRA collaborated with both the City of Dallas and TxDOT throughout the process to help facilitate the priorities of each entity. LTRA guided the City of Dallas through a challenging ROW acquisition process with proactive early engagement and communication with adjacent property owners to determine design preferences and minimize issues.

LTRA was chosen by DFW Airport to manage the design of 32 acres of mixed use development that included the future DFW Airport headquarters building. The development was located on the east side of International Parkway, between Rental Car Drive and the Consolidated Rental Car Center. Project scope included the development of commercial pad sites and all required civil infrastructure (roadways, drainage, grading, etc.). LTRA proactively developed site grading and drainage for the project with minimal disruption to Trigg Lake, a drainage reservoir serving the entire DFW airport property. LTRA was able to maintain traffic operations to International Parkway and Rental Car Drive by strategically phasing roadway construction elements. The Southgate Plaza project was completed and DFW moved into their new headquarters building in 2016.

LTRA was chosen by the City of Dallas to lead a beautification and trail connection project for this 1,500 ft, 4-lane undivided section through the heart of Southern Methodist University (SMU) in Dallas, Texas. The project extended from Central Expressway to Greenville Ave through a fully developed retail area with a DART light rail crossing. LTRA was tasked with adding aesthetic features such as decorative medians and sidewalk, brick pavers in pavement and intersections, landscaping, and art features. LTRA ensured the design accommodated a “complete street” concept where the corridor was designed to utilize multi modal transportation (bikes, trail, street parking, and transit). LTRA coordinated with City of Dallas, TxDOT, and SMU to develop a design that improved mobility and safety with improved aesthetics. LTRA also coordinated with DART to connect the SMU Blvd project to the DART trail system servicing the adjacent light rail station.

LTRA was chosen by City of DeSoto to lead a regional mobility and development project in the DFW area involving the schematic and PS&E design for a 0.7-mile, 4-lane divided section of Danieldale Rd through DeSoto, Texas. The goal of the project was to provide a roadway facility that will accommodate expanding transportation demands while increasing operational efficiency. LTRA Worked together with City of Desoto, Dallas County, TxDOT, and adjacent developers to develop a transportation solution that best met the combined needs of the community. Danieldale was realigned at the Westmoreland Rd intersection to create a safer intersection configuration. LTRA improved pedestrian mobility with a sidewalk on the north side of the roadway and a pedestrian trail on the south side of Danieldale.

LTRA was chosen by the City of Dallas to lead multiple regional mobility and development projects across Dallas. One of the projects included the schematic and PS&E design to develop 0.5 miles of Camp Wisdom into a 4-lane divided section. LTRA coordinated with City of Dallas, TxDOT, and Dallas County in a regional effort to develop safety improvements at the FM 1382 intersection with Camp Wisdom. LTRA enhanced safety at FM 1382 with signalization and improved pedestrian and bicycle mobility with a dedicated paved trail. LTRA was able to develop roadway designs to salvage and maintain recent existing road improvements constructed by an adjacent development. The innovative design avoided significant roadway reconstruction, saving the City of Dallas several million dollars.

LTRA is leading the final design for this $1 Billion+ new location freeway through one of the fastest growing counties in the US. The new location freeway section of US 380 will serve as alternative route to existing US 380 and improve congestion, increase mobility, and reduce crash rates in the area. The US 380 freeway design includes a 6-lane mainlane typical section with 2-3 lane frontage roads. The project also includes 7 new location grade separated interchanges at W University Dr, Wilmeth Rd, Bloomdale Road West, Ridge Rd, Lake Forest Dr, Taylor Burk Dr, and Bloomdale Road East. Complex HEC-RAS 2D H&H modeling was developed to support the design of the US 380 corridor across the Elm Fork Trinity River. LTRA coordinated with TxDOT and multiple stakeholders to ensure key design issues are addressed in a corridor that is rapidly developing. LTRA is assisting TxDOT to develop a staged implementation construction plan for the US 380 corridor that will fit within TxDOT’s budget. The US 380 project is one of the largest final design projects currently in the TxDOT Dallas District.

LTRA was the lead designer for the $100M+ project to reconstruct and widen 7+ miles of SH 105 between Sour Lake and Pine Island Bayou in Hardin County for the TxDOT Beaumont District. Within the city limits of Sour Lake, a 4/6-lane urban typical section was designed that included raised medians to improve safety, median openings for dedicated left turn lanes, and sidewalks to accommodate both bicyclists and pedestrians. In the rural section of the project, LTRA developed a five-lane typical section with a continuous left turn lane to replace the existing two-lane rural highway. The combined urban and rural designs significantly improved safety along SH105 by providing separate lanes for turning vehicles and through traffic. LTRA developed the ROW mapping documents to support TxDOT’s ROW acquisition process along the corridor. LTRA also lead Utility Coordination efforts on SH 105 that included 20+ major petroleum pipeline crossings. Roadway and ditch designs were revised to eliminate almost all conflicts with petroleum pipeline crossings, significantly reducing cost and schedule impacts for TxDOT.

LTRA led the final highway design for new location multilevel interchange between IH 30 and NTTA’s President George Bush Turnpike (PGBT). LTRA coordinated with both TxDOT and NTTA throughout design to facilitate a collaborative project development process for the interchange between TxDOT and NTTA roadway facilities. The multilevel freeway interchange included four new direct connector bridges as well as twin 1+ mile 4-lane bridges spanning Lake Ray Hubbard. Design of the lake bridges required extensive coordination with Dallas Water Utilities that owns the water rights to Lake Ray Hubbard. LTRA developed special drainage designs for the lake bridges to capture the first flush during rainfall events to restrict pollutants and suspended solids from entering Lake Ray Hubbard. The sequence of construction for the interchange was developed to open direct connectors from IH 30 to PGBT early to maximize toll revenue for NTTA while also maintaining existing traffic on a highly congested section of IH 30. The IH 30 – PGBT interchange connected the entire PGBT Eastern Extension to IH30, significantly improving mobility in the region.

LTRA lead the $130M+ major Interstate project on IH 35E at Mayhill that significantly improved the highly urbanized IH 35E corridor in North Texas. The project scope included full reconstruction of several miles of the IH 35E mainlanes and frontage roads through Mayhill, Brinker Rd and Loop 288. The project removed the existing IH 35E bridge over Mayhill that acted as a regional bottleneck by only accommodating one through lane in each direction. The replacement IH 35E bridges expanded Mayhill traffic capacity to three through lanes in each direction, creating a valuable North-South major arterial roadway for Denton County Residents. After a Buc-ees was constructed at Brinker Rd during the design process, LTRA developed multiple alternatives to address the mobility and traffic operations impacts of such a large traffic generator. LTRA eventually selected and designed frontage road bypass bridges to reduce traffic loads at the Brinker Rd frontage road signalized intersections, incorporating traffic operations solutions into the overall IH 35E Mayhill project. LTRA’s design efforts will reduce delays for the travelling public and improve safety along important regional corridors in North Texas.

The $450M+ IH 10 Major Interstate Reconstruction project represents a significant investment in mobility and safety for one of San Antonio’s most important transportation corridors. The project is expanding IH 10 from a four-lane rural highway to a six-lane freeway with continuous two-lane frontage roads, providing additional capacity to meet growing traffic demands. LTRA led the final highway design for three separate PS&E packages as the prime provider, supporting TxDOT’s goal of advancing the project on an accelerated schedule. The design incorporated solutions to reduce utility conflicts and streamline relocations. LTRA also addressed hydraulic considerations related to the corridor’s flat terrain and multiple stream crossings. To further support project delivery, the design minimized right-of-way impacts and optimized the project footprint. LTRA’s work is contributing to the efficient advancement of this key interstate improvement for the San Antonio region.

In Lampasas, LTRA led CEI services for a $25M+ roadway widening project designed to improve traffic flow and safety along a 1.7-mile stretch of US 281. The project expanded the existing 4-lane undivided highway into a 4-lane divided roadway with a flush median, enhancing mobility for the growing community. Our team managed the construction of HMAC pavement, ADA-compliant ramps, sidewalks, curbs, driveways, drainage structures, ITS installations, and traffic signals. To reduce disruption, LTRA coordinated closely with the City of Lampasas, local businesses, and Lampasas High School, adapting construction schedules around peak traffic hours. This proactive approach ensured safe access throughout the corridor while overcoming variable site conditions. The improvements now support a safer, more accessible roadway for both daily drivers and commercial traffic.

The $80M+ reconstruction of US 175 transformed a 4-lane freeway into a 6-lane urban boulevard in southern Dallas County, marking a major investment in regional mobility and safety. LTRA led construction engineering inspection (CEI) services for this milestone-driven A+B project, providing oversight that kept the schedule on track and the work zone safe. Our team resolved complex utility conflicts by collaborating directly with franchise utility providers, and we worked alongside the contractor to rephase parts of the project to accelerate construction and improve traffic safety. Clear communication with adjacent property owners was critical throughout, as we managed coordination around traffic shifts and detours. The result is a more connected, safer corridor that better serves the needs of southern Dallas communities.

Located in the heart of San Antonio, the $10.5M rehabilitation of SL 368 (Broadway Avenue) restored a critical urban corridor while preserving its historical character and minimizing disruption to the community. LTRA led construction engineering inspection (CEI) services for TxDOT, overseeing upgrades that included new sidewalks, ADA-compliant ramps, curbs, drainage structures, driveways, and traffic signal improvements. With constant traffic and proximity to local businesses and historic buildings, maintaining safe work zones and accessibility was a top priority. Our team coordinated closely with stakeholders such as VIA Metropolitan Transit and the City of San Antonio to adjust to on-the-ground conditions and avoid utility conflicts, ensuring the project moved forward efficiently and with care. The result is a more accessible, safer corridor that respects both the community’s heritage and its future needs.

Spanning 8 miles through Waxahachie, the IH 35E Reconstruction Project was a vital effort to modernize one of the region’s most heavily traveled corridors. As part of the $126M interstate widening initiative led by TxDOT’s Dallas District, the project added six new freeway lanes to enhance traffic flow, safety, and regional mobility. LTRA played a central role in providing construction engineering inspection (CEI) services, including contractor coordination, concrete field testing, and daily inspections to ensure safe and high-quality delivery. Facing challenges such as utility conflicts and multi-stakeholder coordination with the City of Waxahachie and nearby businesses, our team helped keep the project on schedule by proposing smart, field-ready solutions. The result is a safer, wider, and more efficient highway that improves travel for thousands of drivers each day.