0013Q Corridor-Ashaway_DOQ Item 401.3000_Addendum-2.pdf

This addendum document is associated with the Corridor-Ashaway project managed by the Rhode Island Department of Transportation (RIDOT). The addendum addresses contingency provisions for Item 401.3000, specifying 1.0 ton of Class 9.5 Hot Mix Asphalt (HMA) as a contingency allocation. The document was calculated by PJP, checked by OEL, and dated August 27, 2026, reflecting final quantity computations for this bid item prior to the August 28, 2026 proposal submission deadline. This contingency material is part of the broader three-bridge replacement project spanning bodies of water in Providence County, which includes bridge demolition, foundation work, prefabricated structural steel components, and asphalt placement across multiple work locations.

The addendum establishes the contingency HMA quantity as 56 of 135 units, indicating this represents one component within a larger material schedule. The Class 9.5 HMA specification is standard for wearing course applications on bridge approaches and roadway surfaces associated with the project's phased completion timeline, with the Ashaway River Bridge due November 10, 2027 and the Potter Hill Bridge due August 14, 2028. This contingency provision allows contractors flexibility for unforeseen conditions during construction while maintaining budget controls aligned with the federally-funded project structure utilizing 80% FHWA funding and 20% state funding under FAP Number STP-3334(001).