CBA Initial License and Update Fees

Last revised: February 14, 2019

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To compute moments, shears, reactions, rotations and deflections of a continuous beam in accordance with the 1994 AASHTO LRFD Bridge Design Specifications for a given loading condition of a uniform load, a series of uniform or trapezoidal loads, a series of concentrated loads, a moving load, a support settlement, fixed end actions due to creep and shrinkage or temperature gradient.  A maximum of twenty spans, simple or continuous with in‑span hinges, can be analyzed.  The beam can have variable moments of inertia.  The live load can be an LRFD loading, an AASHTO loading, a pedestrian load or a user defined loading including a combination of truck over lane load. Either metric (SI) or U.S. Customary units can be specified for computations.


Beam data, design live loads, span lengths, hinge locations, analysis points, moments of inertia, dead loads, special live loads, support settlements, fixed end actions, and live load distribution factors.


Moment, shear, moment‑shear interaction and deflection at each analysis point, reaction and rotation at each support.

CBA User's Manual

Note: An Evaluation (demonstration) version of this software is not available.

CBA Version Released Fee Private Fee Gov/Edu Federal and StateTransportation Agencies
Initial 2.0 Aug-94 --- --- ---
Update 2.1 Jan-95 Free Free Free
Update 2.2 Feb-95 Free Free Free
Update 2.3 Jun-95 Free Free Free
Update 2.4 Jan-96 Free Free Free
Update 2.5 Sep-96 Free Free Free
Update 3.0 Sep-97 $50.00 $50.00 Free
Update 3.1 Sep-97 Free Free Free
Update 3.2 Jun-99 Free Free Free
Update 3.3 Mar-00 Free Free Free
Update 3.4 Apr-01 Free Free Free
Update 3.5 Apr-03 $50.00 $50.00 Free
Update May-07 $50.00 $50.00 Free
Update Feb-15 Free Free Free
Update Jan-19 $50.00 $50.00 Free
New License --- $500.00 $100.00 Free

Note: The update fees listed above are the fees required to update from the previous version.  Update fees are cumulative. Include all update fees for intermediate releases if you are updating from an older version, however the update fee should not exceed that charged for a new license.

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