Portfolio Category: Utilities

FM 1097 Widening, Segments 1, 2, 3

FM 1097 Widening, Segments 1, 2, and 3 Montgomery County, Texas This project was a joint effort between Montgomery County and TxDOT. It involved widening an existing two-lane road with a dedicated left-turn lane into a four-lane road with a dedicated left-turn lane. DCCM was responsible for identifying utilities, coordinating design, reviewing permits and utility agreements, and overseeing relocation. Utility adjustments were needed for all utilities due to most right-of-way being taken on one side, and DCCM worked closely with right-of-way to prioritize parcel acquisitions so utilities could complete adjustments without delays. Utilities included Entergy, Kinder Morgan pipeline, CenterPoint Energy, numerous telecommunication lines, and the City of Willis water and wastewater. DCCM worked with the design team to mitigate utility conflicts that could be costly or require long lead times for adjustments. Our team set up several utility workshops among the roadway design team, the utility owner, and the construction area office to work through the details to protect the pipeline in place and avoid a costly relocation. Other coordination efforts included working with the design team on traffic control phasing to give utilities more time for adjustments while allowing the roadway contractor to continue working without delay. At a Glance $325,000 Project Cost $48 million Construction Cost Markets Power Services Utilities

Avenue S Rehabilitation

Avenue S Rehabilitation Galveston County DCCM provided the design of 8,600 linear feet of roadway reconstruction along Avenue S from 53rd Street to Seawall Boulevard. The paving cross-section comprised two travel lanes with two outside parking areas. The project design included replacing 8,900 linear feet of water line, including branches and intersections along the route, crossing intersections that were previously reconstructed for other concurrent projects. Additionally, a 15-inch sanitary sewer was replaced, stretching from 35th Street to 33rd Street, including branches and intersections. Our assessment of the drainage system along the corridor and side streets enabled us to determine the most effective methods for enhancing drainage efficiency while removing bridge blocks. The flat terrain of Galveston provided grading challenges, and with our detailed 3D grading abilities, the shallow underground storm system had the proper cover under the road and for some instances where standard cover was not achievable, it was discovered and known during the design or it was identified during construction and the design remedies were ready before construction was delayed. Our subconsultants performed geotechnical, surveying, SUE, environmental, and inspection services for the project. DCCM provided construction phase services for the City of Galveston and collaborated with the contractor to ensure the design intent was effectively implemented. The final product of the road was excellent, and the contractor successfully constructed the road and storm sewer system with minimal RFIs and minor adjustments to the road, sidewalks, and storm sewer system grading. All meetings were accompanied by a well-organized agenda and meeting minutes, which included detailed action items to be completed by the next meeting. This attention to detail and accountability helped lead the project to a successful completion and limited citizen complaints. Surveying Services DCCM supported land surveying services for 2.5 miles of Avenue S from 53rd Street east to Seawall Boulevard Drive. Tasks included right-of-way (ROW) determinations, topographic surveying, and subsurface utility surveying to support engineering design. The project included a full-depth replacement of existing pavement and utilities, including water lines and subsurface sanitary and storm sewer systems. Approximately 275 parcels were abstracted to support ROW determinations and graphically depict property ownership. Survey control was established, including ground targets for aerial triangulation of UAS/drone imagery acquired by a subconsultant. Lidar data was also collected, post-processed, and delivered to us for analysis and integration into our survey. Supplemental ground surveying was performed to support the validation of the imagery and lidar data. Final deliverables included 3D mapping in Civil 3D format and rectified orthomosaic imagery of the project extents. SUE Services DCCM provided SUE services along 8,600 linear feet of water and sanitary sewer line from Avenue S from 53rd Street to Seawall Boulevard. The SUE QL-B designation revealed more than 56,000 feet of utilities in that area. As in all SUE projects, the utility mainlines were designated. This project was unusual because all utility services were also designated so that the designers would have substantial utility information and the best chance to protect the utilities in place—this required electronically traceable duct runners, fish tapes, and electromagnetic sweeping. At a Glance $9.25 million Construction Cost $146,000 Survey Cost 86,000 Linear Feet of Sanitary Sewer Line 56,000 Feet of Utilities Markets Transportation Surveying Services Transportation Program Management Surveying Utilities Water & Wastewater

Cedar Bayou Crossing Corridor Study

Cedar Bayou Crossing Corridor Study Harris County and Baytown, Texas DCCM was selected to provide professional services for the proposed Cedar Bayou crossing. The crossing will serve as a critical link for the City of Baytown to ensure the orderly development of the northern part of the city and provide necessary east-to-west mobility to supplement IH 10. The project area was from Hunt Road at Main Street to Kilgore Parkway at SH 146. DCCM provided project management, data collection, existing condition evaluation, alternative analysis, community outreach support, preliminary engineering, geotechnical investigation, subsurface utility engineering, survey, and an environmental analysis. DCCM conducted a corridor study to identify alignment alternatives and assess the project’s feasibility. The study included several aspects to consider and required sufficient information to measure and evaluate a range of viable improvement options. The traffic analysis reviewed traffic and crash data, existing roadways, traffic flow patterns, traffic counts, turning movement counts, and transit and traffic operations. The DCCM team conducted capacity analyses for designated locations and sections of roadways and made recommendations to improve traffic flow. DCCM provided hydrology and hydraulics (H&H) to support the corridor layout of the proposed roadway. This task used the latest Mapping, Assessment, and Awareness project (MAAPNEXT) models for Cedar Bayou as developed by the Harris County Flood Control District. DCCM also provided community outreach, public meetings, and City Council meetings. The project concluded with identifying recommended improvements, preliminary plans with several alternatives and their estimated costs, and a preferred alignment. Surveying Services DCCM performed professional surveying services to obtain and review existing lidar data and the limited preliminary ground survey data for the Cedar Bayou Corridor Study. The project spanned 3.7 miles from North Main Street, 3,300 feet south of IH 10 (west tie-in point), to the intersection of SH 146 and Kilgore Parkway (east tie-in point). The latest available lidar data published from USACE and Texas Natural Resources Information System covering the project area to evaluate and perform the following tasks: Data sets were extracted/downloaded into Esri ArcGIS (Pro+3D Analyst tool) and Context Capture/OpenRoads Cross-data checks were performed against public datasets from TxDOT, the City of Baytown, Harris County, and other available online resources. The MicroStation DGN deliverable included: DEM 2D building/structure footprints Roads, highways, and railroads Overhead transmission lines Other visible features within the lidar data Limited field surveying was performed. Field surveying tasks included setting four project control points, performing limited topographic surveying along North Main Street (1,000 feet north and south of the west tie-in point) and SH 146 (500 feet north and south of the west tie-in), and obtaining cross sections along the existing railroad running through the project. Field surveying also included determining the elevations of the existing railroad running at the railroad bridge over SH 146 and confirming (spot-checking) the lidar data in several accessible areas. The survey data was based on the NAD 83, Texas Coordinate System, South Central Zone (4204) CORS adjustment. Elevations were based on the NAVD 88 2001 adjustment relative to the lidar data. The survey information was provided in MicroStation Select Series 10. At a Glance 3.7 Miles $140 million Construction Cost Markets Transportation Surveying Services Transportation Surveying Utilities Water & Wastewater

Aerial Fiber Route Design Verification and Documentation

Aerial Fiber Route Design Verification and Documentation Harris, Fort Bend, Brazoria, Galveston, and Waller Counties DCCM performed an as-built field survey of the aerial fiber route to verify that it was installed according to design at the correct attachment height. We obtained and documented the heights of all telecommunications cables and electrical conductors in a database spreadsheet. We analyzed the field data for compliance with the design. We created a pass/fail analysis indicating which fiber attachments complied with the design and the National Electrical Safety Code® (NESC) clearance standards. Our team determined which fiber attachments failed and did not comply with the design and NESC clearance standards. SERVICES PROVIDED Aerial fiber route pole attachment measurements and documentation Pole attachment photos Spreadsheet database documentation Verification of design compliance Analysis of pass/fail for attachments meeting NESC clearances At a Glance 2024 Construction Completion Confidential Project Cost Markets Power Services Utilities

Denton County Fiber Audit Documentation

Denton County Fiber Audit Documentation Denton County, Texas DCCM performed a fiber audit for Denton County’s single-mode fiber network, including auditing splice enclosure configurations, fiber patch panel configurations, and fiber-optic cable routing. The project involved over 70 miles of fiber audits with field verification to document patch panel and splice enclosure configurations. Our team provided GIS Esri work to update the Denton County Crescent Link Database with the fiber audit information for the splice enclosure and patch panel configuration documentation. SERVICES PROVIDED Existing fiber network audit Documentation of splice enclosures and patch panel configurations Measurements Redlines on prints Field verification and documentation Photos and identification of splice enclosures, patch panels, and telecommunications bay/racks Created Geospatial reference in GIS using Esri tools Update Crescentlink database with fiber audit documentation At a Glance 70 miles Fiber Audit 2024 Construction Completion Markets Power Services Utilities

Addicks Substation Telecommunications Site Elevated Platform

Addicks Substation Telecommunications Site Elevated Platform Houston, Texas DCCM performed civil/structural and telecommunications engineering and designed a telecommunications site with an elevated platform for a 10-foot by 12-foot telecommunications shelter on an elevated 22-foot by 36-foot by 12-foot-high structural steel platform. The scope of work included the engineering and design of the telecommunications site and the creation of site plans, fiber route plan and profiles, plans of the telecommunications shelter, generator, propane tank, ice bridge connection to the tower, fiber route, and electrical power conduit connections. We provided design from the telecommunications shelter to the substation control rooms, existing backbone fiber ring connections passing through the substation to insert the telecommunications site onto the network, completing telecommunications-specific power designs for generators, UPS, battery, charger, loading, grounding, breaker panel, wire and fuse sizing, all applicable calculations, etc. Our team provided the appropriate hardware in accordance with the client’s design standards. The project included complete grounding and bonding design for the ground ring, creating site plans, grounding system plans and details for the elevated platform, telecommunications shelter, equipment, and tower in compliance with CenterPoint Energy, manufacturer, and industry standards. The design of the structural steel and concrete engineering and foundation included structural engineering, design, and calculations for concrete pier foundation supports and reinforcement, structural steel fabrication drawings, isometric platform drawings, stairs, and handrails. At a Glance 10-foot by 12-foot Shelter Size 2024 Construction Completion Markets Power Services Utilities

Aerial view looking straight down at a multilane highway with a new crosswalk intersecting both directions of travel lanes

FM 2818 (Harvey Mitchell Parkway) Improvements

FM 2818 (Harvey Mitchell Parkway) Improvements College Station, Texas The FM 2818 (Harvey Mitchell Parkway) project in College Station is a story of innovation, collaboration, and technical excellence. DCCM led the team that worked closely with the City of College Station, TxDOT, Texas A&M University, and Easterwood Airport to address the region’s rapid growth and evolving transportation needs. Our journey began with a comprehensive corridor study and traffic analysis, which revealed that traditional intersection designs would not provide the necessary capacity or operational improvements. In response, we expanded our analysis to include six additional alternatives and ultimately selected an innovative “superstreet” (Restricted Crossing U-turn) design. This approach reduced signal phases at intersections, improved traffic flow, and provided flexibility for future upgrades to a controlled access facility. Our scope included data collection, accident and traffic analysis, environmental documentation, public involvement, identification of right-of-way (ROW) and easements, utility coordination, and topographic surveying. We also managed a team of eight subconsultants for specialized analyses and design tasks. We completed both the schematic and PS&E phases for FM 2818, developing a geometric design schematic from Wellborn Road to F&B Road, and seamlessly transitioning into detailed construction documents. The final schematic design was coordinated with the parallel PS&E design team, enabling construction documents to reach 60% design before schematic finalization. This efficient transition was made possible by keeping most of the same key staff and maintaining a strong project management plan throughout both phases. One of the most significant challenges was the presence of a major underground electric duct bank that conflicted with the proposed curb line and storm sewers. By conducting precise SUE QL-A potholing and collaborating with the city and TxDOT, we developed a solution that allowed the duct bank to remain in place while relocating the storm sewer, avoiding major disruptions and keeping the project on schedule. Another challenge arose when a new overpass at Jones-Butler Road was added late in the design process. Our team quickly adapted, revising schedules and resources to incorporate the new structure without impacting the letting date. Environmental considerations were also paramount. White Creek, which runs parallel to the corridor, required careful coordination to minimize impacts to the floodplain and wetlands. Through detailed grading, innovative barrier design, and close collaboration with regulatory agencies, we kept wetland impacts below permitting thresholds and avoided additional ROW acquisition. The FM 2818 project is now under construction. The result is a safer, more efficient, and future-ready corridor that supports the continued growth of College Station and the surrounding community. Traffic Analysis/Corridor Study Services DCCM performed a corridor study for FM 2818 from George Bush Drive to Wellborn Road. The study examined various alternatives, including many different intersection configurations. Ultimately, the conventional intersection designs failed to provide adequate operations. As a result, the superstreet concept was proposed and evaluated as a potential solution for the corridor. This provided the opportunity to reduce signal phases at intersections while maintaining the flexibility to upgrade the corridor to a controlled-access facility in the future should the need arise. Responsiveness: The original scope included an analysis of three options for access management along the corridor, none of which provided adequate capacity. To keep the project on schedule, the DCCM team worked with the City of College Station and TxDOT to identify and analyze six more options before the change order was processed. The innovative intersection used in the final design was one of these six additional options. Surveying Services During the S&E phase, DCCM provided a comprehensive topographic survey on this City of College Station/TxDOT street design project. The route was a 1.8-mile section of the existing state highway roadway. The extra width of the ROW created an unusually large, 80-acre project area, with several acres of native trees and brush. Using baseline survey points and information from the early 1970s, the ROW lines were accurately fitted to the topographic survey. Additionally, Baseline | DCCM had surveyed utility easements along the highway over 15 years prior, before any of the adjoining apartment complexes were developed. Schematic Design Services DCCM developed a geometric design schematic for FM 2818 from Wellborn Road to George Bush Drive. The project scope included conceptual and schematic design, data collection, accident and traffic analysis, conceptual design, schematic design, environmental documentation, public involvement, ROW/easement identification, utility coordination, project management, and topographic surveying. The initial scope included analyzing three design-year alternatives, developing a conceptual schematic for each, and developing the selected alternative through schematic design. Based on the results of the traffic analysis/conceptual design and meetings with City of College Station and TxDOT staff, it was determined that the three design-year alternatives would not adequately address growth issues along the project corridor; therefore, six additional alternatives were analyzed. Based on the traffic analysis and input from the City and TxDOT, a “super street” option was selected and developed through schematic design. SUE Services Under the SUE department’s TxDOT contract, the Bryan District requested that SUE QL-B designation be performed for their 3.2-mile FM 2818 Improvement project. More than 265,000 linear feet of utilities were identified on the project, resulting in a utility map that revealed numerous critical conflicts with the proposed roadway improvements. The designers and utility coordinators asked for 24 SUE QL-A test holes. All test holes were completed, the SUE QL-B designation and the conflicts it revealed were validated, and the designation was assigned. An additional SUE QL-B was requested for the downside streets to fully understand the utility impact. This project faced challenges, including complex traffic control and Texas A&M mowing the TxDOT ROW before each home football game. It was critical to complete the survey work each week before the Friday afternoon mowers arrived. At a Glance 40% Reduction in Corridor Travel Times $57.6 million Construction Cost Markets Transportation Environmental Services Transportation Surveying Utilities

SH 249 (Tomball Tollway), Phases I and II

SH 249 (Tomball Tollway), Phases I and II Tomball and Montgomery County, Texas DCCM was contracted by the Harris County Toll Road Authority (HCTRA) as the Program Management Consultant (PMC) for the design and management of both preliminary and final project designs, as well as construction management and inspection services for Phase II. We developed a project feasibility assessment, which resulted in the SH 249 (Tomball Tollway), Phases I and II engineering feasibility report, and served as the basis for the final design. On its first day of operation, eager toll users doubled the projected 17,000 daily toll transactions, cutting traffic on the existing frontage road in half. Funded entirely with toll road revenue paid by drivers who choose to use the Harris County toll road system, the final construction will extend the toll road into Montgomery and Grimes Counties to SH 105, streamlining trips to and from rapidly growing Grimes County and College Station. Phase I: Spring Cypress Road to FM 2920 This project provided travelers with four main lanes in each direction and was constructed between the existing TxDOT northbound and southbound non-tolled frontage roads. As PMC for HCTRA, DCCM completed an aggressive 9-month design program to deliver plans, specifications, and estimates (PS&E) for HCTRA to bid and construct this phase. DCCM provided leadership, schedule adherence, quality assurance, and oversight to 17 consultants, completing the PS&E for four new toll lanes in each direction along a 6-mile stretch of SH 249, adding five new bridges, retaining walls, and a drainage system that mitigates flooding. Drivers may now bypass seven stoplights while the frontage roads remain toll-free. All milestone submittals were met on time, and the project was constructed in only 16 months and under three construction contracts. Phase I was open to traffic in April 2015 and is exceeding all revenue forecasts. Phase II: FM 2920 to Spring Creek (Harris/Montgomery County line) Design preparations for Phase II began in October 2014 with design revisions to the TxDOT 2006 SH 249 Schematic. As in Phase I, DCCM was the PMC for the design of four-lane toll lanes in each direction, adding three-lane frontage roads on both north- and southbound approaches, five major bridges, flood-mitigating storm sewer detention, a collegiate practice field, and equestrian and bike trails. Services also included computing cut-and-fill quantities for roadway sections, concrete and reinforcement steel quantities for bridge deck pours, and payments for such pours on the contractor’s pay estimate. DCCM monitored the roadway excavation, subgrade preparation, concrete milling, embankment placement for abutments, installation of drill shaft and foundations, concrete beam placement, asphalt pavement placement, bent footings, column, cap pours, reinforced earth walls, 18- to 36-inch reinforced concrete pipes, and various concrete box culverts. Our team oversaw construction management and inspection services for this segment of the project. Phases I and II of the SH 249 (Tomball Tollway) project included environmental investigations and permitting, survey/ROW mapping, utility identification and assessment, subsurface utility engineering (SUE), and hydrologic and hydraulic (H&H) modeling and detention pond design. DCCM also provided construction phase services for Phase II and the direct connectors at SH 99 (Grand Parkway). Mainlanes, Phase I, Section 1 – Montgomery County MCTRA selected DCCM to prepare PS&E for mainlane and ramp construction for a 0.4-mile section of tollway north of Tomball, Texas. The project scope included roadway geometric design, traffic control plans, removal plans, drainage plans with both open and closed systems, SWPPP, cross-sections, general notes, specifications, and construction cost estimates. The DCCM team coordinated with both adjacent designers on the Montgomery County segment and with the design and construction teams of the Harris County segment to the south to deliver a synchronized product that minimized impacts to travelers and adjacent property owners and reduced overall project costs. At a Glance $101 million Phase I Construction Cost $99 million Phase II Construction Cost Markets Transportation Services Transportation Utilities Surveying Water & Wastewater

IH 45 South Expansion

IH 45 South Expansion Galveston County, Texas The expansion of IH 45 South in Galveston County was designed to widen the interstate and improve mobility in a region that has seen continuous growth in recent years. DCCM provided utility relocation and inspection (including water line, communication cable, and gas line), grading, concrete pavement, asphalt-stabilized base, cement- and lime-treated base/subgrade, bridge structures, storm sewer, and detentions. Construction of the widening of a freeway facility included grading, concrete pavement, asphalt-stabilized base, cement-treated base, lime-treated subgrade, asphalt concrete pavement, bridge structures, storm sewers, detention ponds, retaining walls, signing, pavement markings, traffic signals, continuous lighting, and a traffic management system. DCCM was selected to perform utility coordination, subsurface utility engineering, and utility inspection for the entire project. DCCM provided utility coordination and relocation for Frontier, AT&T, Comcast, CenterPoint Energy gas, Texas-New Mexico Power, and Phonoscope. DCCM performed subsurface utility engineering to identify the existing 39-inch encased water line (City of League City) that hindered the construction of the drilled shaft and stone columns along abutment No. 1 on the SH 96 bridge widening. TxDOT also entrusted DCCM with reviewing and approving permit applications for the entire project’s proposed relocation. At a Glance $101.7 million Project Cost Markets Transportation Services Transportation

Downtown Underground Transmission Duct Bank Installation

Downtown Underground Transmission Duct Bank Installation Houston, Texas DCCM provided engineering and construction support services for the design of a 138-kilovolt transmission duct bank to replace aging oil-filled facilities serving the growing, highly congested Downtown and Midtown areas of Houston. More than 12,600 linear feet of underground transmission duct back was designed to connect three critical substations that serve these areas. The design included installations within existing substation facilities along and across TxDOT right-of-way, through the St. Joseph Medical Center, in front of the Toyota Center, and under the METRORail Red Line. DCCM worked with the client to optimize the duct bank configuration and layout to maximize the efficiency of construction and operational methods. DCCM utilized specialized planning and equipment to accommodate two horizontal directional drilling rigs in very restrictive, narrow, and congested areas of the project. Professional services included engineering analysis and design, topographic survey, signed and sealed plan and profile drawings, traffic control plans, construction method solutions, conflict resolutions, utility research, coordination and permitting (with TxDOT, City of Houston, and Metropolitan Transit Authority of Harris County [METRO]), signed and sealed as-built plans, geotechnical services, and construction phase support. All designs complied with the client’s standards and specifications, as well as federal, state, and municipal requirements. At a Glance 12,600 Linear Feet $303,000 Design Cost Markets Power Services Utilities

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