Junction of Highway #4 The Richardson Highway & Community of Glennallen Community of Glennallen, Alaska. Access to a large Visitor Information Center. Services fuel at highway, gas, diesel. North via The Richardson Highway to communities of Gulkana, Alaska, Sourdough, Alaska, Paxson, Alaska, Delta Junction, Alaska and The Alaska Highway. South via The Richardson Highway to Copper Center, Alaska, Tonsina, Alaska, and Valdez, Alaska.