Site work for a bridge / tunnel in Anchorage, Alaska. Completed plans call for site work for a one-story above grade bridge / tunnel.

Sealed bids are requested for ARRC MP 102.5 Emergency Repair Culverts. Bidders are invited to participate in a site visit at the specified location with required PPE. The envelope for submitting offers must be clearly marked with the offeror's name, ITB number, date and time for receipt of offers, and the project name. Bidders are responsible for understanding all terms, conditions, and specifications, regardless of attending the site visit. Bids must be submitted in a sealed envelope and received by the specified time. Submission by e-mail or facsimile is not accepted. All bids must be complete and on the provided forms. Additional instructions and conditions are enclosed. It is the bidder's responsibility to seek clarification on any aspect of the bid as needed. Scope of Work The scope of this project is to mitigate structural issues of three 60-Inch diameter structural plate pipe culvert structures located at ARRC MP 102.5. These structures convey water from Rabbit Creek into the Cook Inlet in South Anchorage. This bid package presents multiple options for this mitigation effort. The Contractor may elect, but is not required, to provide bids all options outlined herein. ARRC will select the option that is in the best interest of ARRC. The two (2) options presented herein are as follows: 1. Install New CBD: Install a new single span, 28-foot long, Owner furnished Concrete Ballast Deck (CBD) span supported by Owner furnished concrete pile caps, using Owner furnished pipe pile. Owner furnished PS-31 structural steel sheet pile will be used to construct new bulkheads at each abutment. Each bent will consist of an array of pipe piles driven to the driving resistance and minimum penetration specified herein and on the Plans. 2. Partial Replacement New Pipe: Remove and replace the first 50-feet of the legacy 60-inch diameter structural plate pipe culvert, removing the culvert from its outlet to the splice location designated on the Plans between the Seward Highway and the tracks. The removed pipe will be replaced with new pipes as outlined herein. The new pipes will be slipped a minimum of 3-feet over the legacy structural steel plate pipes. The annuli of the pipes will be grouted prior to the placement of a headwall at the location of the joint. A new headwall will also be constructed at the outlet of the three (3) new pipes.