Traffic Archives

Map showing pedestrian safety scores across the Shreveport-Bossier region.

Regional Active Transportation Plan (RATP)

NLCOG Active Transportation Plan Northwest Louisiana DCCM was selected by the Northwest Louisiana Council of Governments (NLCOG) to develop a Regional Active Transportation Plan (RATP) for the MPO planning area of Bossier, Caddo, DeSoto and Webster Parishes. This plan will be used as a tool by the NLCOG to improve upon its network of existing facilities and to develop new facilities that provide for improved and safer walking, bicycling, and other forms of micro-mobility for transportation and recreational opportunities. The Plan identified deficiencies and specific improvements to infrastructure with the goal of building a complete network for active transportation users, and will propose project selection criteria to prioritize current and future projects to make the best use of available funding sources and opportunities. To assess the existing conditions experienced by people walking and biking in the region, a comprehensive safety analysis for vulnerable users is evaluating the high-injury network where crashes disproportionately affect people walking and biking and makes recommendations for countermeasures to address specific issues. A latent demand analysis and analysis of previously collected public information will be used as inputs into the development of a safe and comfortable all ages and abilities (AAA) network free from barriers to access. This plan includes a broad outreach component, involving stakeholders, advocates and members of the public throughout the process to create a community-driven plan to make walking, bicycling, and other active modes of transportation safer, more comfortable, and more convenient throughout the region. At a Glance 2024 Completed $280,000 Fee Markets Transportation Services Transportation

Map showing key destinations, bus routes, and coverage areas for the NLCOG 2040 LRTP update in Caddo and Bossier parishes.

Long Range Transportation Plan 2040 Update

Long Range Transportation Plan 2040 Update Shreveport, Louisiana DCCM developed the LRTP for the Shreveport-Bossier City metropolitan area. The LRTP addressed regional and local transportation goals and objectives and encompassed all modes of transportation. The project included extensive public outreach and stakeholder consultation, including public visioning meetings; detailed socioeconomic projections based on a local, expertdriven Delphi Process; and a complete remake of the regional travel demand model (TDM), including a mode-choice component. The plan also addressed Transportation System Management and Operation (TSMO) strategies, multi-modal system deficiencies, safety concerns, and project travel demand for the horizon-year 2040. In addition to the traditional bike and pedestrian element, the project developed a Caddo Parish-specific bike plan that addressed unique needs within the community. DCCM conducted a series of scenario-based planning exercises to inform the plan development. DCCM also developed performance-based metrics used in a Project Selection Process (PSP) that addressed deficiencies identified in the MPOs triennial audit by FHWA. The PSP provided a link between the public visioning process, stakeholder input, and prioritization by the Technical Committee that addressed the multi-modal needs through the 2040 planning horizon. A new regional TDM was constructed based on the state of Arkansas’s statewide model interface and available local data. The new TDM was a state-of-the-practice four-step model that included a cross-classification trip generation model, a gravity model for trip distribution, a mode choice model to split person trips by mode, and traffic assignment by time of day. The TDM included a feedback loop, intersection delay, and advanced reporting features. At a Glance $839,000 Project Cost Markets Transportation Services Transportation

LADOTD Technical Assistance for State Safety Oversight (TASSO) On-Call Services

LADOTD Technical Assistance for State Safety Oversight (TASSO) On-Call Services New Orleans, Louisiana The Louisiana Department of Transportation and Development (LADOTD) was tasked by the Federal Transit Administration (FTA) with overseeing and monitoring the implementation of safety procedures on the rail fixed-guideway public transportation system (streetcar system) run by the New Orleans Regional Transit Authority (NORTA). LADOTD has selected DCCM for seven consecutive three year contracts to assist with designing, implementing, and maintaining a MAP-21 compliant State Safety Oversight (SSO) Program. This project was focused on developing an enhanced oversight program to ensure public safety on the streetcar system. The project was critical to securing federal funding streams in Louisiana. DCCM assisted with the following technical services: Provided assistance to LADOTD with implementing the ‘Certification Work Plan’ (CWP) submitted to FTA outlining the steps to develop a MAP-21 compliant SSO Program Developed a new SSO Program standard detailing the duties and powers of the LADOTD SSO program to oversee rail fixed-guideway public transportation systems in the state Provided new audit procedures to oversee implementation of enhanced safety systems In coordination with the LADOTD SSO, managed the paperwork flow between rail fixed-guideway operators and LADOTD regarding compliance with LADOTD State Standard Assisted LADOTD at meetings with operators on rail fixed-guideway public transportation safety compliance Assisted LADOTD in ensuring compliance of the certified MAP-21 SSO Program including, but not limited to track inspection activities, reviewing design plans for new service lines, conducting accident investigations, and conducting facility inspections. At a Glance 20 Miles $499,000 Project Cost Markets Transportation Services Transportation

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 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 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 showcases coordinated planning and innovative design to address regional growth and evolving transportation needs. DCCM led efforts with the City of College Station, TxDOT, Texas A&M University, and Easterwood Airport to improve corridor operations and support future expansion. DCCM’s scope included topographic surveying, ROW and easement identification, corridor and traffic analysis, conceptual alternatives analysis, environmental documentation, public involvement, subsurface utility engineering (SUE), and management of eight subconsultants. The team completed both schematic and PS&E phases, producing a geometric design from Wellborn Road to F&B Road and transitioning efficiently to construction documents by maintaining consistent staff and project management. A detailed topographic survey was completed for the 1.8‑mile corridor, covering an unusually large 80‑acre ROW. Prior baseline data from the 1970s and earlier DCCM utility surveys ensured accurate property and easement mapping. A comprehensive corridor and traffic analysis showed conventional intersections would not meet long‑term capacity needs. DCCM evaluated additional conceptual alternatives and identified a “superstreet” (Restricted Crossing U‑turn) as the preferred solution, reducing signal phases, improving traffic flow, and preserving flexibility for future controlled‑access upgrades. Environmental constraints along White Creek required careful grading and barrier design to minimize impacts on wetlands and floodplains. DCCM kept impacts below permitting thresholds and avoided additional ROW acquisition. DCCM also performed extensive SUE Quality Level (QL) B investigations covering more than 265,000 linear feet of utilities, revealing critical conflicts. Twenty-four QL-A test holes confirmed existing conditions and guided necessary design refinements. At the same time, additional QL-B work on side streets ensured a complete understanding of utility impacts despite tight timelines and traffic-control constraints. The project faced several significant design challenges, including a major underground electric duct bank that conflicted with proposed roadway and drainage improvements. Through SUE QL-A investigations and coordination with the City of College Station and TxDOT, the team adjusted the drainage while leaving the duct bank in place, thereby avoiding costly relocations. The late addition of the Jones‑Butler Road overpass required rapid schedule and design modifications without affecting the letting date. 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, and hydrologic and hydraulic 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

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