About This BlogThis blog shares information on bridge construction progress at the Pretty Rocks Landslide in Denali National Park and Preserve. Regular updates will be shared throughout the summer construction season beginning in May 2023. Click on any update below for photos and more details. February 15, 2024 Update
February 15, 2024
Two pieces of news in this mid-winter update: 1) The final contract option has been awarded for bridge construction. 2) New illustrations show how the bridge will be constructed on the east side of the landslide and then launched across to the west side. October 19, 2023 Update
October 19, 2023
The 2023 construction season has come to a successful end! Regular updates will return to this blog next spring when construction work resumes. October 10, 2023 Update
October 10, 2023
Blasting is completed for the season and the expanded blasting closure has been reopened. A micropile test program is being completed this week and will conclude the construction activities for the 2023 season. September 29, 2023 Update
September 29, 2023
The crane was moved across the landslide to the west side last week, where an off-road staging area and temporary crane storage garage are being created. The final blasting event of the season is scheduled to happen today. September 25, 2023 Update
September 25, 2023
Work this week involves preparation for the next round of blasting, installing attenuator fencing, and delivering concrete abutment blocks from Anchorage to the park. September 20, 2023 Update
September 20, 2023
The contractor has continued blasting work on the west side of the slide. Watch a video of the blasting operations in this post. The expanded closure for blasting work at Pretty Rocks will remain in place until the contractor field season shuts down for winter. September 18, 2023 Update
September 18, 2023
The contractor spent last week preparing for a second round of blasting on the west side. In Anchorage, concrete is being poured for the 13 foundation elements for the western abutment. September 13, 2023 Update
September 13, 2023
In the past week, the contractor has installed a protective structure over NPS monitoring instruments on the west side of the slide, completed bench excavations, and drilled blast holes for the first blast of the west abutment rock wall. September 6, 2023 Update
September 06, 2023
Blasting work will begin this week on the west side of the slide. For public safety, an expanded closure will be in place 1500 feet around the blasting work area at Pretty Rocks beginning on Thursday, September 7, and is expected to remain in place into late September. August 28, 2023 Update
August 28, 2023
The rough access route across the slide is in use. Ongoing work involves excavating the east abutment upper slope and hauling material to the staging areas. August 21, 2023 Update
August 21, 2023
Granite has successfully reached the road on the west side of the slide with an excavator! They have also begun preparing the third staging area at Mile 45.1. Work on the east bridge abutment area does not require blasting at this time. August 14, 2023 Update
August 14, 2023
Granite began earthwork on the east side of the slide last week. They are continuing nighttime work to haul material from the Tek Pit to the staging areas and daytime work to cut, shape, and stabilize the north rock wall at the east abutment. August 7, 2023 Update
August 07, 2023
Last week, the contractor worked on setting up two staging areas, began installing geotechnical monitoring instruments in the slide area, and gathered a baseline topographic survey. This week, material will be hauled from the Tek Pit to the Mile 44 staging area and survey work at the slide will continue. July 31, 2023 Update
July 31, 2023
Last week, the contractor removed the gravel pile from the Ghiglione Bridge pullout and began developing the staging area at Bear Cave (Mile 44.8). July 19, 2023 Update
July 19, 2023
On-site activity is ramping up and the contractor is preparing to haul gravel and other materials to the Bear Cave area. July 7, 2023 Update
July 07, 2023
Preparation work continued throughout June and contractors are now ready to proceed with beginning excavation and earthworks this summer. May 24, 2023 Update
May 24, 2023
This week, a new timeline for the project was announced with a new completion date of July 2026. Welcome to the Pretty Rocks Construction Blog
May 02, 2023
Welcome to the Pretty Rocks Construction Blog, where we'll be sharing weekly progress updates on bridge construction at the Pretty Rocks Landslide. |
Last updated: May 1, 2023