Description
The US Highway 160 Walsenburg Compaction Grouting Project aims to address coal mine subsidence along the Colorado Department of Transportation (CDOT) US Highway 160 right-of-way near milepost 304. The project involves drilling and casing approximately 1,400 linear feet of borings to a maximum depth of 70 feet, and installing up to 350 cubic yards of low mobility grout to fill existing mine voids and compact rubblized and collapsed overburden. The project requires a mandatory pre-bid meeting and site visit, and the contractor must demonstrate previous experience with rotary drilling and compaction grouting methods.
• The project is located in Huerfano County, Colorado.
• The contractor must submit a list of at least two drilling and grouting projects with references within the past ten years.
• The project includes additional bid items for sediment control, crew standby, additional drilling and casing, additional compaction grouting, and emergency HMAP patch.
• The contractor must comply with all applicable provisions of §§24-85-101, C.R.S., et seq., and the Accessibility Standards for Individuals with a Disability.
• The project is funded by Federal grant money made available to the State of Colorado through the U.S. Department of Interior, Office of Surface Mining, Reclamation and Enforcement.