Bridges are constructed in irrigation canals and drains using pile foundation to avoid throttling waterways. From investigation, the invert level of pile cap rises above the waterways high water level by about 0.5m Recently, the flow rates of several canals and drain increase inasmuch the output of drainage treatment plants. As result, numerous waterways water levels are rising from 0.5m to 1.5m As a consequence, pile cap became fully or partial submerged , therefore , the local scour around the bridge pile may be greatly affected . From this standpoint, different experimental tests to study the effect of submerged pile cap on the local scour around piles were performed. Furthermore, the pile cap entrance angles were investigated as an enhancement to the local scour around piles .the results indicate that, the higher pile cap submergence ratio, the deeper corresponding scour hole around piles . On contrary, reducing the pile cap entrance angle cause an improvement to the scour rate around piles. Finally, different charts were plotted describing the relationships between scour depth and pile cap submergence ratio. The main conclusions are: 1- The maximum scour depth around piles increases as the pile cap submergence ratio increases , For fully submerged pile cap, the maximum scour depth around first row of piles increases by 66% of the freeboard case. 2- The first row of piles facing the flow is the most affected than the other rows. 3- The maximum scour depth around piles decreases as the pile cap entrance angle decreases. Changing the pile cap entrance angle from sharp angle 90o to 15o reduces the local scour around first row of piles by 47%. 4- The biggest enhancement to the local scour around piles in case of submerged pile cap was during using pile cap entrance angle of 15o 5- There is a significant effect for changing the pile diameter on the maximum scour depth in addition, increasing the pile diameter by 66% and 100% cause increase in maximum scour depth by about 9% and 17% respectively.