  In this study, an integrable vertex model based on the quantum affine
superalgebra $U_q\bigl(\hat{gl}(2|2)\bigr)$ is constructed. The model is
characterized by a particular assignment of spectral parameters and lowest as
well as highest weight $U_q\bigl(gl(2|2) \bigr)$ modules to its lattice links.
Solutions of the corresponding intertwining conditions yield the Boltzmann
weights. The set of mutually commuting charges contains a quantity equivalent
to the super spin chain Hamiltonian proposed for the description of the integer
quantum Hall transition.
