3-CPN 103497-2 Marine Creek Sanitary Sewer Parallel Interceptor M-279 M-245B - Part 2 - Bidding Drawings.pdf

This is a bidding drawings document for a sanitary sewer and water infrastructure improvement project in Texas, specifically for the Marine Creek Sanitary Sewer Parallel Interceptor M-279 and M-245B Part II project. The project encompasses two primary units: Unit I involves sanitary sewer improvements including approximately 3,960 linear feet of 48-inch to 72-inch open-cut sanitary sewer pipe installation, 570 linear feet of 72-inch pipe with 90-inch steel casing via open-shield pipejacking, approximately 2,430 linear feet of 48-inch to 72-inch pipe using trenchless methods within steel casing or tunnel liner plate, 1,470 linear feet of 6-inch to 18-inch pipe by open cut, bypass pumping of existing sanitary sewer lines, and construction of two sanitary sewer siphon structures and two junction structures. Unit II addresses water improvements including approximately 2,200 linear feet of 36-inch water pipe by open cut, 280 linear feet of 36-inch pipe with steel casing or tunnel liner by trenchless methods, 425 linear feet of 24-inch AWWA C200 steel water pipe on an existing bridge, 4,330 linear feet of 6-inch to 12-inch water pipe by open cut, and cathodic protection installation for 24-inch to 36-inch water pipe.

The bidding drawings document provides the technical specifications and design details necessary for contractors to prepare accurate bids for this comprehensive infrastructure project. The document serves as a critical reference for understanding the scope, site conditions, utility locations, and construction methodologies required for both the sanitary sewer and water system components, enabling bidders to assess project complexity, material requirements, and construction sequencing accurately.