SCRRA Temporary Shoring of the San Juan Creek Bridge

Summary

SCH Number
2019038481
Lead Agency
Southern California Regional Rail Authority
Document Title
SCRRA Temporary Shoring of the San Juan Creek Bridge
Document Type
NOE - Notice of Exemption
Received
Posted
3/20/2019
Project Applicant
Energy Solutions/Barnhart

Document Description
The purpose of the proposed bridge support {shoring) project is to move a heavy load across the San Juan Creek Bridge (BR~197.9). This load exceeds the current bridge load capacity. The existing railroad bridge at Mile Post 197.9, on SCRRA's Orange Subdivision in San Juan Capistrano, is scheduled to be replaced in the next 5 years, due to Its structural conditions Which limits the capacity to carry a heavy load without external support. The project will temporarily structurally support the existing bridge by placing temporary steel and wood grid mats on to the channel floor, and then placing large temporary gantry supports with hydraulic jacks mounted and situating them under the bridge girders. If the channel bottom has been disturbed by winter storms or has any remaining low flows; the path from the landing point to the proper position under the bents may require some rock removal, leveling, or temporary culverting of low flows. No work is proposed when storm flows are present. If required, any channel modification ·will be limited to the minimum extent necessary to safely place the gantry system, and the channel will be returned to the pre-project condition.

Contact Information
Aaron Azevedo
Southern California Regional Rail Authority (SCRRA)
2558 Supply Street, Bldg A
Pomona, CA 91767

Phone : (909) 392-8532

Location

Cities
San Juan Capistrano
Counties
Orange
Other Location Info
The existing San Juan Creek Bridge is located in the City of San Juan Capistrano near the Camino Capistrano exit of the Interstate 5 (1-5) freeway at Mile Post (MP) 197.9 on the Orange Subdivision. The bridge is within the Orange County Transportation Authority (OCTA) right-of-way and is operated and maintained by Metrolink/Southern California Regional Rail Authority. The Orange Subdivision corridor is utilized by Metrolink, Amtrak, and BNSF trains.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
21080(b)(9); 15302 Class 2
Reasons for Exemption
15302.Replacement or Reconstruction Class 2 consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the'structure replaced and will have substantially the same purpose and capacity as the structure replaced. Note: See NOE for full details.

Attachments

Notice of Exemption
2019038481   PDF 267 K

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