Concrete, a widely used construction material, faces challenges in tensile strength and crack resistance, which impact its structural performance and durability. This study investigates the integration of hybrid fibers such as glass fibers (GF) and polypropylene fibers (PF) alongside acrylic polymer in M25-grade concrete to enhance its mechanical and durability properties. The research evaluates the effects of varying polymer content (0%–5% by weight of cement) while maintaining constant fiber proportions (1% GF and 0.25% PF by volume) on workability, Mechanical Properties, and long-term durability characteristics. Experimental results indicate that incorporating acrylic polymer significantly improves concrete's workability, transitioning from zero slump in fiber-reinforced concrete without polymer to increased slump values with higher polymer dosages. Optimal polymer content (4%) enhances compressive strength by 22.86%, split tensile strength by 38.07%, and flexural strength by 64.76% compared to conventional concrete. However, exceeding 4% polymer leads to diminished mechanical performance, highlighting the importance of dosage optimization. Durability tests, including pH analysis, carbonation depth, and water absorption, confirm improved resistance to environmental factors. Elevated pH levels (up to 11.74) ensure an alkaline environment conducive to reducing reinforcement corrosion. The reduced carbonation depth and water absorption percentages further emphasize the role of polymers in enhancing concrete's longevity. This study demonstrates that hybrid fiber-reinforced concrete modified with acrylic polymer is a viable solution for high-performance structural applications, offering improved mechanical properties and durability. These findings contribute to the development of advanced concrete composites for infrastructure subjected to heavy loads and harsh environmental conditions, paving the way for sustainable and durable construction practices.