This paper aims at investigating the behavior of bridge integral frame-abutments under alternate cycles of expansion and contraction of the bridge due to seasonal temperature variations by adopting the finiteelement (FE) modeling. An example multiple-span reinforced concrete deck bridge is proposed and analyzed using an elasto-plastic two-dimensional FE model. The bridge abutment is supported on a strip foundation. The proposed FE model has the capability of simulating both the construction of the bridge, and backfilling process using a phased analysis technique. The mobilized earth pressures and the changes in these pressures due to the thermal effects are predicted for different bridge lengths and compared to those calculated in accordance with the British Design Manual for Roads and Bridges (DMRB)-BA 42/96. The bridge is analyzed for different ranges of temperature change, abutment stiffness, and backfill relative density. A comparison between the results obtained and those due to the isolated abutment counterpart structure is held. The results of analyses have shown that the design earth pressures are notably affected by the bridge length, design range of temperature change, and the number of temperature increase/decrease cycles, but to a less extent by both the abutment stiffness and backfill relative density. The results obtained for both types of abutment have shown that the predicted pressures differ markedly, and that predictions for the internal forces are generally higher for the integral abutment.