Generally, concrete with a cylinder compressive strength higher than 6000 psi (41.4 MPa) is designated as high strength concrete. High strengths are achieved using stronger coarse aggregates, relatively higher cement contents and lower water/cement ratios. In most, if not all recent applications, high range water reducing admixtures have been used to improve the workability at low water/cement ratios. The other two common admixtures used in high strength concrete are condensed silica fume and fly ash. With these admixtures strengths up to 20,000 psi (138 MPa) have been obtained. This paper provides an overview of making and using high strength concrete for various structural applications.