Durango-LA plata county airport upper overflow parking lot reconstruction

The City of Durango, Colorado is seeking sealed bids for the Durango-La Plata County Airport Upper Overflow Parking Lot Reconstruction project, with bids due on February 6th, 2024 at 3:00 pm Mountain Time. The project involves expanding and reconstructing the airport's upper overflow parking lot, which will add approximately 276 new parking spaces across 1.80 acres, including 60 parking spaces at a 60-degree angle and ADA-compliant parking modifications. Key deliverables include excavation of 2,340 cubic yards, asphalt paving of 8,750 square yards, aggregate base course installation, concrete pan and curb work, pavement markings, fencing, lighting, signage, and landscaping improvements. Contractors will need to obtain airport secured area badging, with an application process taking 20-30 minutes and additional background checks required. The project has a substantial completion timeframe of 60 calendar days after contract award, with a completion date no later than August 30th. An alternate bid option is available for replacing topsoil and native seeding with cobble landscape cover, which would result in a deduction from the total contract price.

The procurement does not specify specific set-aside designations or restrictions for disadvantaged enterprises. The project is locally funded and does not appear to have specific limitations on contractor participation. According to the engineer's design memo, the estimated probable construction costs total $1,348,793, which includes a 10% contingency. Non-potable water will be available at no charge via a standpipe, and contractors may potentially use on-site millings as base course material, subject to geotechnical approval. The project involves complex infrastructure improvements that must meet La Plata County parking standards, Americans with Disabilities Act (ADA) requirements, and Federal Aviation Administration (FAA) specifications. Geotechnical studies have revealed the site has sandy lean clay subgrade with moderate soil conditions, and the drainage design will manage stormwater through catch basins and an existing 18-inch storm drain. The construction drawings and engineering design were completed on December 21st, 2023, suggesting an anticipated construction timeline in the first half of 2024.