Monorail Guideway Repair

Project Description:

The monorail guideway consists of two sets of parallel precast post-tensioned concrete beams supported predominantly by precast reinforced concrete piers. Each end of every beam is connected to the pier by two vertical steel threaded rods, nuts, and plate washers. The bolts were installed through the top of the beam at blockouts in the beam top surface, and after installation these blockouts were filled with grout.

This project is to perform major maintenance and repairs at locations of spalls and delaminations at the top surface of the guideway beams, remove the deteriorated existing concrete and/or mortar surface, prepare surface, clean, and patch with methacrylate-based repair mortar.

Engineer's Estimate:

The Minimum Award Value for this contract is $375,000, as defined in Section 1-01.3. The Work will be assigned by Work Package(s). Each Work Package will specify the scope of work and must be performed as specified in the Contract and the Work Package details.

The Contract amount is Not to Exceed $930,000.

Project Location:

Seattle Center Monorail Station (370 Thomas St) to Westlake Cener Monorail Station (400 Pine St) including the guideway between the stations made up of supports (piers) and East (Red) and West (Blue) Monorail beams. The 0.9-mile elevated monorail guideway runs east from Seattle Center Monorail Station to the intersection with Fifth Avenue; then follows Fifth Avenue, crossing intersections with Broad Street, John Street, Denny way, Vine Street, Wall Street, Battery Street, Blanchard Street, Lenora Street, Virginia street, Stewart Street, and Oliver Way. The guideway ends at the southernmost extent of the Westlake Center Shopping Center located at the corner of Fifth Avenue and Pine Street.

Specific project locations will be specified in the Work Package issued after the Contract is executed.