  In contrast to Einstein's theory, the first order formulation of gravity
turns out to be a natural habitat for double-sheeted spacetime solutions which
satisfy the vacuum field equations everywhere. These bridge-like geometries
exhibit degenerate tetrads at their core that separates the two sheets. Here we
study the geodesics of these solutions and elucidate their causal structure.
These spacetimes emerge as a classical realization of a two-universe solution
in pure gravity. We also find the angle of deflection of light propagating in a
bridge geometry. From this, we conclude that this spacetime would be
indistinguishable from the Schwarzschild exterior when observed from
asymptotia.
