2022 NE-ASCE Structural Technical Meeting
SCHEDULE
Social: 5:30 PM (cash bar)
Dinner: 6:15 PM
Presentation: 7:00 PM
MENU
La Spezia
Angus Sirloin Steak, Chicken Parmigiana, Salmon, or Vegeteratian with mashed potatoes, fresh asparagus, and dinner roll.
SPEAKER AND PRESENTATION TOPIC
Nathan P. Dickerson, P.E., HDR, Omaha
UPRR Narlon Bridge Replacement
PRESENTATION ABSTRACT
Union Pacific Railroad (UPRR) recently completed the replacement of a 125 year-old steel and iron braced tower bridge over San Antonio Creek at Milepost 291.33 Santa Barbara Subdivision near Lompoc, California. The nearby historical Narlon station location serves as the namesake for the 720-foot-long and 80-foot tall bridge.
Collaboration among numerous entities and stakeholders was critical to project success. A scaled CM/GC-light process was used to deliver the project after years of slow progress. As this line is primarily a passenger route, LOSSAN provided funding for the bridge replacement as part of a package for infrastructure state of good repair and safety improvements. The unique coastal setting for the bridge results in moisture cycles and high chlorides driven by prevailing winds off the Pacific Ocean. On-road access is only available through Vandenberg Space Force Base (VSFB). In August 2021, the culmination of extensive planning and collaboration led to a highly successful bridge changeout during a 2-week curfew. This presentation will focus on challenges and solutions developed by the team. Adopting a collaborative approach on similar future projects is recommended based on lessons learned from the Narlon bridge replacement.
SPEAKER BIOGRAPHY
Nate Dickerson is a project manager for HDR’s Omaha railroad practice with over 22 years of experience. He specializes in structural and civil engineering design for railroad projects. Nate regularly manages design, replacement, rehabilitation and maintenance projects for railroad clients. He is a long-time member of ASCE.
PRICE
ASCE Section Members: $15
Non-Members or Guests: $20
No Meal: $10
Life Members: FREE (but must register)
Students: FREE (but must register)
RSVP
Register by Monday, September 12, at 11:59 PM
PAY
Pre-pay with PayPal or at the door (cash or PayPal)
QUESTIONS OR INQUIRIES
Richard L. Wood: rwood@unl.edu
Garrett Martindale: garrett.martindale@hdrinc.com
Nate Dickerson is a project manager for HDR’s Omaha railroad practice with over 22 years of experience. He specializes in structural and civil engineering design for railroad projects. Nate regularly manages design, replacement, rehabilitation and maintenance projects for railroad clients. He is a long-time member of ASCE.
