Only question #$3$ please

Example $1$:

The longitudinal frame model of the $2-$span bridge and typical section are shown.

Determine:

The unfactored reaction force of a single lane live load $($HL$-93)$ that should be used for

abutment $1$ design.

The unfactored reaction force of a single lane live load $($HL$-93)$ that should be used for

pier $2$ design $($ignore the two truck$/$tandem loading$).$

The unfactored live load $($HL$-93)$ positive moment that should be used for mid$-$span

superstructure design.