Prior to co-founding CLGann, LLC, Clay Gann, PE, CFM served in key roles on multiple high profile and very successful projects across all regions of Texas. Some of the more significant projects are listed below.
Clay served as the Drainage Task Lead for the design and PS&E to rehabilitate 2.7 miles of freeway, add shoulders, auxiliary lanes, ramp improvements, direct connectors and bike/pedestrian improvements. He was directly responsible for proposed grading and Geopak Drainage modeling and design of more than 25 complex storm sewer networks. He prepared the PS&E (more than 300 sheets) including drainage area maps, computation sheets, storm sewer plans, profiles and special details. In addition, he represented the prime firm in coordination meetings and all matters related to drainage and managed the design and impact analysis efforts related to affected cross drainage structures (provided by others).
Served as the Drainage & SW3P Task Leader for the detailed design of grading and drainage improvements, and for the design of temporary and permanent erosion and sediment control BMPs for a new, four-lane, limited access tolled facility between State Loop 1 (Mopac) to FM 1626. The corridor traverses an environmentally sensitive area, especially as relates to karst features and Edwards Aquifer recharge issues, requiring an extensive NEPA and public involvement process. In order to protect environmentally protected karst-dwelling species, Clay was responsible for designing a grading, drainage and construction phasing plan that protected and maintained the size and quality of runoff to all affected karst features along the corridor. He was also responsible for the design and PS&E for all storm sewer plans, SUP culvert layouts, construction phasing plans, prohibited activity plans, karst protection plans and erosion/sediment control plans.
https://www.mobilityauthority.com/traveler-info/open-roads/45SW-Toll
Served as the Drainage & Water Quality Task Leader for the preliminary design of grading, drainage and water quality improvements for a new, four-lane, limited access tolled facility between State Loop 1 (Mopac) to FM 1626. The corridor traverses an environmentally sensitive area, especially as relates to karst features and Edwards Aquifer recharge issues, requiring an extensive NEPA and public involvement process. Clay was responsible for the design of cross culverts, drainage systems and water quality BMPs. The environmentally sensitive nature of the project required an enhanced level of TSS capture treatment involving multiple BPSs in series to adhere to both TCEQ guidelines and stakeholder expectations while also preventing impacts to existing karst features. Innovative and sustainable solutions incorporated into the design included the use of Permeable Friction Course pavement, Vegetated Filter Strips, Grassy Swales, and Batch Detention Water Quality Ponds which also served as Hazardous Material Traps.
https://www.mobilityauthority.com/traveler-info/open-roads/45SW-Toll
Served as the Roadway Hydraulic Design (10.2.1) Task Leader for the PS&E to reconstruct 9.8 miles (Bruceville to FM 2063) of rural four-lane freeway to a six-lane facility, including conversion and reconstruction of existing two-way frontage roads to one-way operation. Project includes 5 interchanges and adjoining roadways, 20 ramps, a direct connector, 12 grade-separations, and 12 stream crossing bridges. Clay was responsible for coordination and design of grading and drainage improvements. He prepared plans for all storm sewer design and longitudinal flow elements including drainage area maps, computations, plans, profiles and construction details.
http://ftp.dot.state.tx.us/pub/txdot-info/my35/wac/fliers/3b.pdf
Served as the Drainage Task Leader for the PS&E to add direct connectors and other improvements to an existing three-level diamond interchange between two six to eight-lane controlled access tollways. Roadway, retaining wall and storm sewer design elements were taken to 100% completion, whereas bridge designs were taken to a 30% level for the design-build bidding document deliverable. Clay was responsible for managing all drainage coordination and design
https://www.ntta.org/roadsprojects/existroad/Pages/Dallas-North-Tollway.aspx
This design-build project consists of a six-lane divided controlled-access tollway facility from north of Georgetown to Seguin. Clay served the following roles:
https://www.dot.state.tx.us/ttf2007/assets/SpeakerPresentations/Session%20III%20Fuller.pdf
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