b'RUNWAYS COS87configuration still used today was put into place. Since the lastFACTS&FIGURES full rehabilitation in 2002, 17R-35L and the airports other two runways have undergone numerous patch and repair projects. Project: Runway Rehabilitation Gate Guard: Cascadia Global Security& Upgrades Electrical Contractor:Planning and Execution Location: Colorado Springs AirportElectrical ExcellenceThe airport hired RS&H, an architecture,Runway: 17R-35L Flagging & Haul Route Monitors: engineering and consulting firm with airfieldLength: 11,022 ft. Flaggers Inc.expertise, to assess the condition of 17R-35LWidth: 150 ft. (with 30-foot shoulders)Pavement Markings: Hi-Lite Airfield and determine the best way to rehabilitateServicesit. Arlando Gilbert, the firms senior projectMill Depth: 5 inches Erosion Control & Landscaping:manager for the runway overhaul, notes thatAsphalt Overlay: 85,000 tons T-P Enterprises RS&H didnt approach the task with a solutionPavement Condition Index Ratings:Asphalt Milling: Western Millingin mind, but rather an investigative, analyticalARLANDO GILBERT 53 before rehab; 100 afterAsphalt Surface Treatment:process in hand. Construction: May through July 2021 Vance BrothersWe walked every inch of the runway, says Gilbert, a civilConsulting Engineer: RS&H Inc. Associated Projects: Upgrading engineer who enjoys the massive size, scale and complexityPrime Contractor: Kiewit Infrastructure Co. runway lighting to LEDs; relocating PAPI of airfield aviation design. We commissioned geotechnicallights; raising wind cones; installing new Quality Control Testing: Kiewitbackup generator, pavement temperature exploration, took core samples and did falling weightInfrastructure Co.; Vivid Engineering Inc. sensors & airfield lighting control deflectometer testing to understand what is happening beneathQuality Acceptance Testing: regulators; new airfield electrical vaultthe pavement. We scoured every engineering and constructionGeocal Inc. with improved HVAC report from the time it was built through many years ofSurvey & Grade Control: Edward- Accolades: 2021 Best in Colorado improvements until now. James Surveying Award, airport category, from Colorado Essentially, the project team created a time-lapse portrayal ofMinor Crack Repair: A-1 Chipseal Asphalt Pavement Association; Quality in Construction recognition from National how the runway was constructed, how and when subsequentGrooving: Cardinal/International Asphalt Pavement Associationlayers were added, and its then-current condition. Grooving & GrindingBased on the findings, RS&Hs recommendation was to mill the top 5 inches of asphalt off the entire length and width of the runway and repave it to create the smoothest possible surface. The complexity of the undertaking was magnified exponentially by Colorados notoriously fickle weather. With temperature sheers of 40 degrees possible in a single day, the project team targeted a 90-day construction window during spring/summer to complete the work.RS&H focused on developing a phasing plan to minimize disruptions for airport tenants and users. This was especiallySMOOTHNESScrucial because the airfield would remain operational while crews rehabbed Runway 17R-35L. After the project team submitted a Construction Safety Phasing Plan to the FAA, the agency held a Safety Risk Management Panel to further examine risks and potential impacts to the airfield and airspace around COS. Once Kiewit was brought on board, they were able to look at our phasing plan and refine it even further, notes Gilbert. They streamlined it piece-by-piece to optimize shutdown windows and crossovers.In addition to affecting many private sector users, closing one of the primary runways at COS for three months impacted a key federal tenant, Peterson Space Force Base, located on the northern edge of the airfield. Gilbert stresses that collaboration played a key role duringSince 1993, APR has provided smoothness evaluation services the project, which was structured as a bid-build project withfor the largest A&E firms and the smallest, local contractors. Experts at P-401 and P-501, APR can also produce an effective the designer and builder contractually independent from oneand efficient corrective action plan if needed.another. Speaking from the engineering firms perspective, Gilbert appreciates the effort Kiewit put into its work as the builder.Contact APR Today for Your Next Paving Projectwww.aprconsultants.com937-849-6795AirportImprovement.comSeptember 2022'