The study dealt on determining the effectiveness of the Gateway Reading Intervention Toolkit (GRIT) as a bridging intervention for the identified struggling readers at the secondary level. Respondents used the developed bridging intervention toolkit for the identified 50 struggling readers at the secondary level. An initial evaluation was done through the DepEds activity Brigada Pagbasa, and from the data, the 50 struggling students were selected. An orientation was done to discuss the intervention program immediately followed by a pre-test to assess the students reading level and capability. Respondents underwent a five-week session to acquire the different phonemic awareness skills in different difficulty levels followed by a weekly assessment using Jerry L. Johns Basic Reading Inventory.  In the fifth week, a post-test and individual oral reading evaluation was done to see the respondents progress. Based on the result of the pre-test and post-test scores, it implies that the Gateway Reading Intervention Toolkit was an effective tool in learning the different phonemic awareness skills. The study also revealed that there is a significant relationship between the bridging intervention toolkit using the Gateway Reading Intervention Toolkit (GRIT) and the respondents phonemic awareness.