Long span post tensioned bridge designs

A beam for use in construction of a long span bridge structure comprising:

• a reinforcing member formed of a plurality of aligned modular elements and having a geometric configuration selected from a group consisting of:
• a “U” tub beam with composite deck system;
• and a decked I-beam;
• and
• each of said plurality of aligned modular elements each further comprises a prestressed beam cast from a UHPC mix as a unitary body;
• said UHPC is configuration to have:
• an initial compressive strength, fci′=10.0 ksi;
• a compressive strength at service, fc′=17.4 ksi;
• a modulus of elasticity of concrete, Ec=6500 ksi;
• a residual rupture stress, frr=0.75 ksi;
• and
• a concrete unit weight, wc=0.155 kcf;
• said UHPC mix further comprises a plurality of discontinuous fibers distributed randomly throughout a concrete matrix, said plurality of discontinuous fibers formed of a material selected from the group consisting of:
• steel;
• polypropylene;
• nylon;
• polyvinyl alcohol;
• polyolefin;
• polyethylene;
• polyester;
• acrylic;
• aramid;
• carbon;
• silica glass;
• basalt glass;
• glass fiber-reinforced polymer;
• and basalt fiber-reinforced polymer;
• and
• said plurality of aligned modular elements are connected by an epoxy grout adhering as element joints and post-tensioned to form the reinforcing member.