IH-10 at the Trinity River
	Chambers County, Texas
	For this TxDOT-Beaumont project, TSC is responsible for the development of the final schematic layout and PS&E package for the replacement of this existing monumental bridge over the Trinity River. The project includes the redesign of two miles of IH-10, two way frontage roads, two turn-arounds, a 3,000 foot-long bridge, and four ramps. TSC's responsibilities also include coordination with surveyors and managing the project team. TSC specifically designed all alignments and profiles, the Digital Terrain Model, typical sections, geometric layout, superelevation transition, retaining wall locations, cross-sections, bent locations, ROW requirements, and control of access line.

	Sam Houston Tollway Widening
	Houston, Texas
	TSC's responsibilities on the Harris County Toll Road Authority project included the development of the final schematic layout and PS&E package for this tollway facility widening that includes the widening of concrete pavement and two overpasses by 14 feet in each direction. The project includes 1.54 miles of freeway, 552 feet of bridges over two cross streets, and six ramps. TSC specifically designed all alignments, profiles, typical sections, geometric layout, retaining walls, saw cut lines, signing and striping, traffic control plan, and demolition plan.

	Velasco Boulevard at the Old Brazos River
	Freeport, Texas
	For this TxDOT-Houston project, TSC prepared the bridge design package for the replacement of two 597-foot-long off-system bridges, each carrying two lanes of traffic and a sidewalk. Working closely with the City of Freeport to find alternate routes for a 12-inch water line that was attached to the old bridge, TSC determined that it was best to attach the redesigned water line to the new bridge. This project required extensive design to comply with ADA requirements, including a sidewalk that did not follow the bridge profile and lengthy access ramps at both ends of the bridge. TSC coordinated with the U.S. Coast Guard and was responsible for the traffic control during construction, the hydraulic analysis, illumination, bridge layouts, bridge design, and water line design.

	Courchesne Bridge at the Rio Grande
	El Paso, Texas
	TSC prepared the PS&E package for the replacement and widening of this structurally deficient off-system bridge over the Rio Grande River. This TxDOT-El Paso project included roadway design, bridge foundation design, bridge layout and design, scour evaluation, and a traffic control plan using detours. The bridge construction and traffic control plan were coordinated with the state of New Mexico.

	CR 120 at the San Antonio River
	Wilson County, Texas
	This off-system bridge replacement project for TxDOT-San Antonio features a historic Pony Truss with a 345-foot three-span Type-IV beam bridge. TSC performed a Log Pearson Type III hydrologic analysis and transposed the data to get the river flows for use in the HEC-RAS hydraulic analysis. The scour calculations were performed based on the velocities from the HEC-RAS analysis. TSC worked closely with the Bridge Design Group to prepare the necessary documentation for the relocation of the Pony Truss and to coordinate the environmental work.

	US 79 at the Little Brazos River
	Hearne, Texas
	TSC performed an alternatives analysis of four options for replacing this deficient bridge over the Little Brazos for TxDOT-Bryan. Due to cost concerns, the four options were developed to assist the District in determining the most cost effective means of replacing the deficient bridge. The analysis included two options for phase constructing the ultimate 84-foot-wide roadway section on two different alignments. The second two options consisted of constructing a smaller 44-foot-wide structure with two different alignments that could easily be widened to the ultimate 84-foot-wide structure in the future.

	CR 121 at Hayes Creek
	Brazoria County, Texas
	This TxDOT-Houston project features the replacement of this existing 22-foot-wide, 54-foot-long, four-span wooden timber bridge with a 47-foot-wide, 70-foot-long concrete bridge. TSC will lead the development of the PS&E package which will include embankment, excavation, lime treatment, cement treatment, HMAC and/or concrete pavement, storm sewer, signing, pavement markings, traffic control plan, SW3P, and structural design.

	CR 221 at Hayes Creek
	Brazoria County, Texas
	This TxDOT-Houston project features the replacement of this existing 20-foot-wide, 28-foot-long, single-span wooden timber bridge with a 47-foot-wide, 50-foot-long concrete bridge. TSC will lead the development of the PS&E package which will include embankment, excavation, lime treatment, cement treatment, HMAC and/or concrete pavement, storm sewer, signing, pavement markings, traffic control plan, SW3P, and structural design.

	CR 163 at Mustang Bayou
	Brazoria County, Texas
	This TxDOT-Houston project features the replacement of this existing 24-foot-wide, 120-foot-long, nine-span wooden timber bridge with a 47-foot-wide, 135-foot-long concrete bridge. TSC will lead the development of the PS&E package which will include embankment, excavation, lime treatment, cement treatment, HMAC and/or concrete pavement, storm sewer, signing, pavement markings, traffic control plan, SW3P, and structural design.

	FM 1462 at Chocolate Bayou
	Brazoria County, Texas
	This TxDOT-Houston project features the replacement of this existing 31-foot-wide, 155-foot-long five-span concrete bridge with a 60-foot-wide, 170-foot-long concrete bridge. TSC will lead the development of the PS&E package which will include embankment, excavation, lime treatment, cement treatment, HMAC and/or concrete pavement, storm sewer, signing, pavement markings, traffic control plan, SW3P, and structural design.

	CR 176C at Drainage Ditch
	Brazoria County, Texas
	This TxDOT-Houston project features the replacement of this existing 24-foot-wide, 38-foot-long, three-span wooden timber bridge with a 47-foot-wide, 60-foot-long concrete bridge. TSC will lead the development of the PS&E package which will include embankment, excavation, lime treatment, cement treatment, HMAC and/or concrete pavement, storm sewer, signing, pavement markings, traffic control plan, SW3P, and structural design.

	Johnson Street at Drainage Ditch
	Brazoria County, Texas
	This TxDOT-Houston project features the replacement of this existing 30-foot-wide, 54-foot-long, four span wooden timber bridge with a 45-foot-wide, 70-foot-long concrete bridge. TSC will lead the development of the PS&E package which will include embankment, excavation, lime treatment, cement treatment, HMAC and/or concrete pavement, storm sewer, signing, pavement markings, traffic control plan, SW3P, and structural design.

	Birch Road at Clear Lake Shores Canal
	Galveston County, Texas
	This TxDOT-Houston project features the replacement of this existing 25-foot-wide, 66-foot-long, two-span pan girder concrete bridge with a 30-foot-wide, 70-foot-long, single span box beam concrete bridge. This bridge has complicated utility issues such as gas, electric, communication, water, and sewer lines attached to both sides of the existing bridge.

	McKay Road at Drainage Ditch
	Galveston County, Texas
	This TxDOT-Houston project features the replacement of this existing 20-foot-wide, 26-foot-long four-span timber bridge with a 30-foot-wide, 30-foot-long single span prestressed precast concrete slab bridge.

	Oleander Drive at Drainage Ditch
	Galveston County, Texas
	This TxDOT-Houston project features the replacement of this existing 20-foot-wide, 43-foot-long, three-span timber bridge with a 30-foot-wide, 50-foot-long, single span prestressed precast concrete slab bridge. This bridge serves a dead-end street in a residential subdivision with no feasible detour available and is complicated by deep roadside ditches and residential properties near the ends of the bridge. Additionally, there is a 24-inch exposed sewer line crossing the ditch underneath and along the center line of the bridge.

	CR 140 at South Walnut Creek
	Robertson County, Texas
	TSC’s responsibilities on this TxDOT-Bryan project included preliminary engineering, establishing a HECRAS model, and providing a hydraulic analysis. TSC also established the horizontal and vertical alignment, conducted a preliminary bridge evaluation for design consideration, completed the bridge approach and bridge layouts, and performed roadway design.

	Fairmont Parkway Railroad Overpass
	La Porte, Texas
	TSC’s responsibilities on this Harris County Public Infrastructure Department project included the development of the final schematic and PER for this urban arterial. The purpose of this project is to increase mobility and improve air quality by eliminating an at-grade railroad crossing and constructing a railroad overpass. The design includes a railroad overpass, two turn-arounds, and four ramps. Some of the challenges include a vertical clearance of 23.5 feet for a railroad in close proximity to 16th Street, utility coordination, traffic control plan, geometric layout, and a tie-in with the existing roadway at 16th Street intersection. TSC's responsibilities include coordination with surveyors, TxDOT, the Port of Houston Authority, and managing the project team. TSC secifically designed all alignments and profiles, the Digital Terrain Model, typical sections, geometric layout, retaining wall locations, bent locations, traffic control plan, and quantity estimates.

	Market Street over Fresh Water Bayou
	Harris County, Texas
	This Harris County Public Infrastructure Department project features the replacement of an existing two-lane, three-span concrete bridge with a new concrete bridge. TSC's responsibilities included the design of retaining walls, approach slabs, any necessary asphalt transitions, and the reconstruction of existing outfalls.

	Canutillo Bridge (FM 259) at the Rio Grande
	El Paso, Texas
	For this TxDOT-El Paso project, TSC was responsible for the replacement of a structurally deficient on-system bridge from SH 20 (Doniphan) to 1,000 feet west of the Rio Grande. The project included surveying, roadway design to accommodate one 12-foot lane and one 8-foot shoulder in each direction, drainage, signing, pavement marking, signalization, bridge layout and bridge design to include one 5-foot sidewalk in each direction that accommodates ADA standards. TSC investigated and incorporated International Boundary and Water Commission (IBWC) requirements to provide freeboard and maintenance vehicle clearances, levee road access, meets and bounds drawings and descriptions of permanent and construction easements, and any additional requirements required by the IBWC.

	Bridge of the Americas (BOTA) Ramps
	El Paso, Texas
	TSC is responsible for preparing the plans, specifications, and estimate (PS&E) package for this project which features the design of a ramp beginning on Gateway North near Paisano Drive and continuing onto the Northbound IH-110 / IH-10 eastbound connector ramp. TSC verified the preliminary schematic and drainage study to assure compliance with current design criteria. Additionally, TSC prepared plans and details and computed quantities to include roadway design, grading, paving, hydraulic data sheets, storm drainage system, drainage channel improvements, traffic signals, signing, pavement markings, illumination, traffic control plans, storm water pollution prevention plans, demolition plans, retaining walls, bridge widening details, specifications, and cost estimates. TSC also prepared the bridge layouts and furnished the structural details and bridge quantities for the overpass bridge ramp.

	Secured Truck Entrance at the Turning Basin Terminal
	Harris County, Texas
	This Port of Houston Authority project features the design and construction phase engineering services for a new secured truck entrance and improvements to the drainage at the Main Entrance to the Port of Houston Authority. TSC's responsibilities include the design of the new secured Truck Entrance Road, Cargo Bay Road, comprehensive drainage improvements at the Main Entrance, as well as railroad and utility coordination for this project in a highly-secure area.