Railroad Overpass
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.
Tollway Widening
SC'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.
Roadway Expansion
Design Engineer responsible for the development of PER and PS&E package for the reconstruction of an urban arterial. The purpose of this project was to upgrade an existing 2 lane rural roadway into a 4 lane urban curb and gutter section with controlled turn lanes and improved intersections from West Gulf Bank Road to Breen Road a distance of approx 1.3 miles. David prepared schematic layouts for major roadway and all minor roadway intersecting streets, researched and coordinated relocation of public and private utilities along the route. Utility relocations included a City of Houston water main at the south end of the project and municipal utility district water and sanitary sewer lines near the north end of the project. He also prepared plan & profiles with cross sections for review in the PS&E submittal.
Street Widening
Development of PER and bid document package for the reconstruction of an urban arterial. The purpose of this project is to upgrade an existing facility into a widened four-lane section and concrete sidewalk with continuous left turn lanes. Besides paving and grading, the project required the design of a detention pond. Responsibilities include coordination with surveyors, TxDOT, the City of Humble, Harris County Flood Control District, sub-consultants, and managing the project team. The project required a design schedule in order to meet funding time lines. All project milestones were discussed with the Client and the project was designed on schedule.
SH 99
The work to be performed consists of providing various roadway design engineering services for SH 99 (Grand Parkway): Segment E from 0.57 miles S. of Clay Road to 0.57 miles N. of Clay Road, approximately 1.14 miles. TSC's role in this project included design of horizontal and vertical alignments, typical sections, intersection layouts, traffic control plans, hydraulic design of an in-line detention, retaining walls, bridge layouts, preparation of specifications and estimates, as well as computer modeling of cross sections for earthwork quantities and design. Also performed geometric design, horizontal and vertical alignment, plan and profile sheets, bridge layout, review, retaining wall design for 6 walls, intersection design for Clay Road and traffic control design for all phases.
caption
PLACEHOLDER
caption
Placeholder
caption
PLACEHOLDER
Bridge of the Americas
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, cost estimates.
Trinity River
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.
Houston Park Project
Responsible for preparation of construction documents to perform grading, drainage, sidewalk route, under ground utility, storm drainage and detention pound design. TSC obtained approvals from City of Houston and HCFCD. Houston Downtown consists of Office Building, Restaurant, Interactive Fountain, multi use amphitheater and Lake Water Garden along with Gateway Plaza, Landscape areas and 10 feet wide sidewalk around the lake and buildings, connecting to the existing sidewalk along adjacent roadways.
Little Brazos River
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.
Hayes Creek
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.
Hayes Creek
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.
Mustang Bayou
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.
Chocolate Bayou
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.
Brazoria County Drainage Ditch
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.
Brazoria County Drainage Ditch
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.
Clear Lake Shores Canal
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.
Galveston County Drainage Ditch
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.
Galveston County Drainage Ditch
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.
South Walnut Creek
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.
Old Brazos River Bridge
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.
Fresh Water Bayou Bridge
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.
FM 259 at the Rio Grande
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.
Rio Grande River
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.
San Antonio River
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.
Sidewalk Improvements
TSC has been contracted by the Airline Improvement District to provide engineering and project management services for pedestrian and bicycle improvements throughout the 4 square mile district to serve its 16,000 residents. The project begins along Airline Dr. from E. Canino Road to W. Gulf Bank and along Aldine Mail Route Road from Airline Dr. to Sweeny Road. Andrea is directly involved in preparation of construction plans, specification, cost estimates and bid documents for proposed pedestrian sidewalk. She is obtaining approvals from TxDOT, HCFCD and airline district improvements.