A freeway segment currently has four $11-ft$ wide lanes and a $3-ft$ right shoulder in the southbound direction. It is operating in LOS B with a traffic density of $15\mathrm{.}6p\frac{c}{m}\frac{i}{ln}$ and a peak$-$hour factor of $0\mathrm{.}85.$ The freeway is on level terrain with $15\%$ heavy vehicles, and currently has no on$-$ or off$-$ramps within a distance of three miles upstream and downstream of the mid$-$point of the analysis section. New interchanges are to be constructed that would result in $6$ on$-$ and off$-$ramps within the distance of three miles upstream and downstream of the mid$-$point of the analysis section and total traffic volume is projected to double, with the same percentage of heavy vehicles, and the peakhour factor going to $0\mathrm{.}95.$ What would the new LOS and density be after the interchange construction and new traffic conditions?