The highwaytohell_251109_734.zip file you have requested: Maps Levels Missions / Multiple Gametypes / Left 4 Dead Map Highway To Hell - 154.43mb is not available. Perhaps try browsing all files for the game Left 4 Dead and upload any files you want to share or are missing. This is the only information we could locate:
I have added the second map to my campaign. It features a section loosely based off a realfreeway. Guess where and let me know how it compares to valves iteration. Thanks for playing.