I always enjoy watching the cab ride on the Livingston Club layout.
I use the same method, foil around a bolt. You can just make out the culvert beyond the trestleMark and Sherrel: Mark's culvert scene gave an idea for my layout. I forgot to add some during construction under the railroad's road bed, but I'll find a spot or two for them.
I make culverts out of aluminum foil by wrapping the foil around a bolt and the bolt's threads give the convert the grooves. After wrapping the foil several times, I unscrew the foil from the bolt. Some weathering and I have a culvert.
It takes a couple attempts to master the technique.
Look around my layout and you'll see some culverts as loads or laying along the right as if fallen off a passing freight.
RailroadBookstore.com - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section.
ModelRailroadBookstore.com - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.