The lower arm of the cross was carved as a whole and does
not join the foot of the cross, which in its turn goes all
the way down to the knot.
Only one other of Erik's stones,
was carved in the same way.
The x between ”ant x hans” had to be squeezed in for all the
runes to fit.
Below, you can see an article in Swedish on U 1157,
taken from the book Upplands Runskrifter.