The bridge that Sheriff Tyler goes across while looking for the kids was also used by the director's father in his show "Little house in the Prairie", and that director was none other than Michael Landon.
Besides being used in Little House on the Prairie, the covered bridge was also used in the first episode of Star Trek Deep Space Nine where Sisko and his son Jake are seen fishing.
The character Marty Davis, who did not appear in the past two movies of the series, has been recast. Samantha Smith portrays Marty Davis, due to Katherine Heigl not being available to reprise the role.