Transportation

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 Services Service Markets Market

Brays Bayou Federal Flood Control, Multiple Channel Improvements, and Bridge Replacements

Brays Bayou Federal Flood Control, Multiple Channel Improvements, and Bridge Replacements Houston, Texas DCCM was contracted by HCFCD to provide engineering services for three separate projects for Brays Bayou. Channel Modifications, Discrete Segment 109 – DCCM evaluated the impact of the proposed channel widening on the existing foundation of eight bridges. DCCM also designed soil-nail and gravity retaining walls to protect the bridge abutments and to stabilize the bayou banks. Additional services included preparing a structural analysis of the proposed walls per HCFCD criteria, PS&E, force mains relocation design, relocation and replacement of existing storm sewer flap gate boxes, and an updated evaluation of the previous IH 610 bridge engineering report. Services also included an alternative final design, evaluation of existing bridge foundations’ capacity, and a recommendation on soil excavation impact.  Telephone Road, Lawndale Street, South 75th Street, and Almeda Road Bridge Replacements – DCCM provided preliminary and final design and bid and construction phase services for the replacement of the four bridges. DCCM investigated the site, reviewed record drawings and existing utilities, and conducted a topographic survey of the existing channel and bridges to supplement the data. DCCM assisted with the coordination of lane configurations and sidewalk widths to determine typical bridge sections and prepared exhibits showing alternatives for each bridge. DCCM prepared TCPs, local drainage design, SWPPP, a drainage area map, hydraulic calculations, and drainage standards. Construction cost: $23 million Stella Link Road and Ardmore Street Bridge Replacements – DCCM provided the design, coordination, scheduling, and PS&E for the replacement of the existing Ardmore Street bridge and addition of a new span to the Stella Link Road bridge. The project increased the hydraulic capacity of Brays Bayou by expanding the cross-sectional area under the bridges. The new bridge at Ardmore Street provided a U-turn, wider lanes, and sidewalks for community connectivity. The project included a compressed schedule to meet federal funding requirements, environmental issues, and utility coordination due to gas lines, storm sewer, gravity and force main sanitary sewers, and electrical and water lines on the bridges.  At a Glance $11 million Discrete Segment 109 Construction Cost $23 million Telephone Road, Lawndale Street, South 75th Street, and Almeda Road Bridge Replacements Construction Cost $23 million Stella Link Road and Ardmore Street Bridge Replacements Construction Cost Services Service Markets Market

Panther Parkway

Panther Parkway

Panther Parkway Sebring, FL PHASE I – In fall 2001, DCCM completed the design for widening approximately one mile of Fairmount Drive from a two-lane local road to a five-lane major collector with sidewalks. Construction was completed by the end of 2002 at a cost of $500,000. PHASE II – DCCM supported the County by designing highway lighting and signalization for six intersections and preparing the design and permitting for six stormwater retention ponds along the two-mile route. PHASE III – In January 2017, DCCM contracted with the Highlands County Board of County Commissioners to modify the design of a 4.3-mile segment of Sebring Parkway Phase III between Sebring and Avon Park. The original design and permit, completed by others, proved cost-prohibitive and jeopardized an FDOT CIGP Grant. Leveraging our expertise in stormwater permitting, DCCM redesigned the entire roadway and modified the Environmental Resource Permit, managing $3.2M in FDOT funding. Construction, estimated at $8M, began in March 2018. By August 2019, the north-end connection to the Memorial Drive Roundabout was completed, and the Sebring Roundabout (formerly Panther Parkway) on the south end was finished by year-end 2019. At a Glance 4.3 Miles Project Size $10M Project Cost Services Transportation Markets Transportation

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