Caltrans – State Route 140 Ferguson Slide Permanent Restoration – California - Project Profile
"Caltrans – State Route 140 Ferguson Slide Permanent Restoration – California - Project Profile" contains information on the scope of the project including project overview and location. The profile also details project ownership and funding, gives a full project description, as well as information on contracts, tendering and key project contacts.
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California Department of Transportation (Caltrans) is undertaking the reconstruction of a road section in California, the US.
The project involves the permanent restoration of the two-lane SR-140 and realigning it with the existing highway. It will be implemented in two phases.
The first phase, which consists of removing 113,000 tonnes of loose material.
The second phase includes the construction of a 229m rock shed on the same alignment. The structure is designed to include two 4m wide lanes, two 2m wide shoulders and a 1m wide emergency walkway on the riverside.
In November 2007, a Draft Environmental Document (Initial Study/Environmental Assessment) was circulated for public review.
In January 2008, the comment period for the draft environmental document was concluded.
The project will be federally funded through the Major Damage Permanent Restoration Program (MDPRP).
In the first quarter of 2014, Final Environmental Assessment (EIR/EIS) was completed.
On March 14, 2014, a joint venture comprised of Myers & Sons Construction (Myers) and Ralph L. Wadsworth Construction Company, LLC (RLW) was selected by the Caltrans as the construction management/general contractor (CMGC) for the first phase of the project.
In March 2015, talus removal works on the first phase commenced and are underway.
Geotechnical investigations and data collection for the detailed design of the rock shed are underway.
The rock shed design will be finalized after the rocks are cleared and Caltrans is expected to have a contract signed for the rock shed by the second quarter of 2016.
In January 2016, Forest Service proposed to approve Special Use Permit Issuance (SUP) for the construction of the second phase of the project.
Wyllie & Norrish Rock Engineers (WNRE), an independent consultant was appointed as an engineering consultant for carrying out an assessment of slide and providing with a second opinion over the project.
Four 76.2m deep boreholes are expected to be strategically placed on the slope for the collection of necessary data and the work to install the boreholes is expected to commence from August 2016 to November 2016, subject to weather conditions, obtaining permits and equipment availability.
Geotechnical data on groundwater elevations and slope stability is expected to be collected from November 1, 2016, to March 1, 2017, subject to weather conditions, permits, and equipment availability.
On March 2, 2017, Draft Soil Characterization Report was submitted.
Caltrans is seeking a report from WNRE and the environmental permits are being processed for the project and stability analysis activities are underway.
The project involves the restoration of the two-lane State Route 140 in Mariposa County, California, the US.
The US$101 million project includes the following:
1. Realignment of the existing road
2. Construction of a 229m rock shed
3. Construction of a two 4m wide lanes
4. Construction of a two 2m wide shoulders
5. Construction of a 1m wide emergency walkway on the riverside
6. Construction of related infrastructureReasons To Buy
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