[PHOTOS] Caltrans Uses 14lbs of Explosives to Blow Up 458-Tons of Boulders Blocking US-50 Near Echo Summit Caltrans’ South Lake Tahoe area maintenance crew responded to three large boulders that fell onto U.S. Highway 50 near Echo Summit on Thursday, March 3, 2022. Related: [VIDEO] Caltrans Blows Up Huge Boulders Blocking Lake Tahoe, CA’s Highway 50 The estimated weight was 458 tons. The largest was 23 feet long and 14 feet tall. The crew used about 14 […] SnowBrains | March 7, 2022 0 Comments