GRAVEL TRAIN OPERATIONS RESUME IN MAT-SU Traffic reminders for gravel mine areas near Palmer and Kashwitna 40009 Alaska Railroad and gravel mine operators remind Mat-Su residents and drivers that gravel mining and rail transportation resumes, beginning mid-May: along Glenn Highway near Inner and Outer Springer Loops (Palmer) at Kashwitna (north of Wasilla) Palmer: Expect 3-hour delays at Outer Springer crossing during train loading, approximately 6-10am (and 6-10pm when 2 trains operate daily). Use Inner Springer Loop for alternate access to Glenn Hwy. Inner Springer will be blocked 20-30 minutes during the end of the loading process, 9-10am/pm. For more info, call 907-265-2357 or visit Alaska Railroad.com > Corporate > In the Community > Gravel Trains. N Hilsher Hwy State Fair Rail Station Rebarchek Ave Blunk St Cienna Ave Glenn Highway Outer WEB CAMO AS&G Tipple McLeod Lake Inner Springer Loop Gravel Train loading Springer Loop Herman Ad McLo Kaye Marie Outer Springer Loop Inner Springer Loop GRAVEL TRAIN OPERATIONS RESUME IN MAT - SU Traffic reminders for gravel mine areas near Palmer and Kashwitna 40009 Alaska Railroad and gravel mine operators remind Mat - Su residents and drivers that gravel mining and rail transportation resumes , beginning mid - May : along Glenn Highway near Inner and Outer Springer Loops ( Palmer ) at Kashwitna ( north of Wasilla ) Palmer : Expect 3 - hour delays at Outer Springer crossing during train loading , approximately 6-10am ( and 6-10pm when 2 trains operate daily ) . Use Inner Springer Loop for alternate access to Glenn Hwy . Inner Springer will be blocked 20-30 minutes during the end of the loading process , 9-10am / pm . For more info , call 907-265-2357 or visit Alaska Railroad.com > Corporate > In the Community > Gravel Trains . N Hilsher Hwy State Fair Rail Station Rebarchek Ave Blunk St Cienna Ave Glenn Highway Outer WEB CAMO AS & G Tipple McLeod Lake Inner Springer Loop Gravel Train loading Springer Loop Herman Ad McLo Kaye Marie Outer Springer Loop Inner Springer Loop