$6\mathrm{.}6$ Estimate the equivalent $18-$kip single$-$axle load applications $($ESAL$)$ for a four$-$lane pavement $($two lanes in each direction$)$ of a rural interstate highway with a truck count of $1000$ per day $($including $2-$axle, $4-$tire panel, and pickup trucks$),$ an annual growth rate of $5\%,$ and a design life of $20$ years. $[$Answer: $2\mathrm{.}82{10}^6]$