Res 2014-141/ILA with TXST for Traffic Impact Analysis at Sessom and Academy

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EXHIBIT A Scope of Services The work to be performed by HDR Engineering, Inc. (ENGINEER) under this contract will consist of providing professional services to perform intersection analysis of Sessom Drive and Academy Street to determine methods of improving the design capacity, operations and safety of this intersection. This work will be comprised of traffic forecasting, evaluation of alternatives, existing, nobuild and build alternatives analysis, and development of conceptual exhibits. Task 1: Data Collection 1. Coordinate with the City and Texas State University to obtain necessary information. 2. Conduct a field review of the existing roadways, within the study area limits, to note and verify lane configurations, speeds, roadway geometrics and observe existing traffic operations on the study area network to note operational problems and existing traffic patterns. 3. Conduct data collection to consist of peak hour and daily traffic volumes to document existing traffic demand and patterns in the area immediately impacted by the project. Proposed data collection includes the following and will be conducted during the regular semester class calendar: a. AM (7 -9) and PM (4 -6) peak hour turning movement counts shall be collected at the following intersections: L Academy Street and Sessom Drive ii. Sessom Drive and Read Street iii. Sessom Drive and Texas State Driveway (just east of Academy Street) b. 24 -Hour bi- directional traffic counts on Sessom Drive between Academy Street and Comanche Street Task 2: Corridor /Intersection Analysis 1. Utilizing available traffic projection information and counts collected as part of the study, develop existing (2014) and design year (2020) traffic volume forecasts for all intersections in the study area. 2. Using existing geometric and traffic volume information described herein, code the AM and PM peak hour Synchro models to reflect transportation network configurations for existing (2014) traffic conditions. 3. Using the existing calibrated traffic model as the base, code AM and PM peak hour Synchro models to reflect transportation network configurations associated with the proposed operational improvements configurations. Three (3) scenarios shall be modeled as listed below for the design year (2020) traffic volume conditions: a. No build condition b. Two (2) alternative configurations (to be developed in Task 3) 4. Summarize results of the analysis in a technical memorandum. Task 3: Alternatives Development and Analysis 1. Based on existing traffic information, field reviews, and known constraints, develop potential alternative configurations for the intersection of Academy Street and Sessom Drive. Considerations will include traffic volumes and patterns, access for buses, sight distance, and impact on adjacent intersections. Potential alternatives may include signalization, realignment, or reconfiguration to an innovative concept. 2. Meet with the City and Texas State to discuss alternatives, traffic analysis results, and obtain feedback. Task 4: Development of Conceptual Exhibits Based on feedback received from the City and Texas State, conceptual exhibits will be prepared for the alternatives. The conceptual exhibits will include horizontal alignment options only; no other design information such as vertical /profile design is included in this scope of work. The exhibits shall be developed for preliminary cost estimating purposes only and will not include detailed design. 1. Review and evaluate pertinent existing data; 2. Field Reconnaissance including field visit, research and use available aerial photography for project base map. 3. Develop conceptual layouts for the study intersection.