bridges

All types of railroad and highway bridges, prototype and modeling.

Building a Pegram truss bridge

Clinician: 

Modeling an HO scale 216' railroad bridge with abutments based on a Pegram Truss design using CAD drawings, Central Valley bridge parts, and scratchbuilt styrene and brass components. In progress photos will be presented as the construction steps are discussed.

Day Time Room
Tuesday, Aug 25 4:00 PM to 5:00 PM Three Sisters
Wednesday, Aug 26 9:30 AM to 10:30 AM Three Sisters

Scratchbuilding a trestle based on the prototype

Clinician: 

Modeling a 207' long, 73' high frame trestle in HO scale. Cutting stock basswood on a table saw and detail photos of bent and stringer construction are included. Slides of the second and fourth subdivisions of the Camas Prairie Railroad, taken on a Hi-Rail trip in August of 1993, will be featured.

Day Time Room
Tuesday, Aug 25 1:00 PM to 2:00 PM Weidler
Wednesday, Aug 26 8:00 AM to 9:00 AM Three Sisters

Portland's Steel Bridge

Clinician: 

A brief history of the century-old Steel bridge which crosses the Willamette River in Portland. The bi-level bridge is rare in its design, with the lower level capable of telescoping into the upper level. The railroad occupies the lower level while trolleys, traffic, and light rail have crossed the upper deck.

Day Time Room
Tuesday, Aug 25 7:00 PM to 8:00 PM Mt. Hood
Wednesday, Aug 26 2:30 PM to 3:30 PM Weidler

8 bridges for the Columbia & Western

Clinician: 

The CPR's Boundary subdivision is notable for having nearly a mile of bridges. The clinic describes how models of 8 of these bridges were researched, designed and constructed in a variety of materials from styrene to etched brass. Focus will be placed on selective compression, model design for strength, piers and abutments, painting, and designing bench work to allow easy installation many years later. A video run-by across all the bridges will end the seminar.

Day Time Room
Monday, Aug 24 8:30 PM to 9:30 PM Mt. Hood
Friday, Aug 28 4:00 PM to 5:00 PM Mt. Bachelor

Beyond Pratt: Designing and building better bridges for your layout

Clinician: 

Everyone loves bridges on their layouts, but limited selection and unrealistic design of commercial kits mean many scenes are not as interesting as they could be. Craig Bisgeier, an avid scratchbuilder and modeler, believes that we can all do better modeling with basic tools and parts and a little information. Follow step by step as Craig explains the basics of truss bridges, basic bridge design, and what's available out of the box (and why most of it is awful) to the average modeler. Craig then goes through how to use commercial kits and parts to improve the looks of the off the shelf models, and how to make custom bridges that will stand out on your layout with just a little more effort. Emerging technologies like laser cutting and 3-D printing are also pushing the limits of what's now possible! The clinic ends with a humorous discussion of what NOT to do. Join Craig and see what you can do to improve your bridge modeling!

Day Time Room
Monday, Aug 24 1:00 PM to 2:00 PM Sellwood
Tuesday, Aug 25 8:00 AM to 9:00 AM Mt. Hood
Subscribe to RSS - bridges