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Skagit River Journal600 of 700 total Free Home Page Stories & Photos (Also see our Subscribers Magazine Sample) The most in-depth, comprehensive site about the Skagit Covers from British Columbia to Puget Sound. Counties covered: Skagit, Whatcom, Island, San Juan, Snohomish & BC. An evolving history dedicated to committing random acts of historical kindness |
Home of the Tarheel Stomp Mortimer Cook slept here & named the town Bug |
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The cover of Jill Livingston's book shows one of the dozens of historical photos she includes and the familiar shield of US99 that was partially inspired by the logo of United Pacific Railroad. |
Any time, any amount, please help build our travel and research fund for what promises to be a very busy 2011, traveling to mine resources from California to Washington and maybe beyond. Depth of research determined by the level of aid from readers. Because of our recent illness, our research fund is completely bare. See many examples of how you can aid our project and help us continue for another ten years. And subscriptions to our optional Subscribers Online Magazine (launched 2000) by donation too. Thank you. |
Roadbed. This is more complex than it might seem. First the roadbed is leveled out "to grade." In the earliest days, grading was done by a crew of men with shovels and wheelbarrows. Horse-drawn Fresno scrapers seemed like a miracle after all that digging. And then came the motorized graders and Caterpillar tractors. The same job is accomplished today by one man (or woman?) in a giant earth mover.Jill also provides fascinating information about infrastructure along the highway, especially the bridges, some of which you can find on old stretches of the road. She starts with the old beam bridges, two of which you can still see near Ashland, Oregon, at the Steinman Overcrossing and the Dollarhide Overcrossing, both constructed in 1914. Also dating from the turn of the 20th century were the truss bridges, most designated by the name of their main builder, William Howe, a contractor in New England who patented the system in 1840. The design of a truss, which is usually a variant of a triangle, creates both a very rigid structure and one that transfers the load from a single point to a considerably wider area. You can see a lot of truss bridges crossing rivers and they are easily identified by the interlinking triangles of steel. The earliest truss bridges were built of wood and bolted together with iron rivets.
Naturally, more material is moved and reshaped for a modern road than was done 100 years ago. For example, an early highway engineer would have viewed a small hill as an obstacle and designed the road to up and over it or around it, whereas a modern highway will cut right through the same "obstacle." Material can be "borrowed" from one area (thence the term "borrow pit"), relocated to another area and then leveled out. The principle was the same in 1910 as it was in 2000.
Surface. On top of the graded roadbed is the surfacing material. The most pressing aim was to make the road dust free in summer and mud free in winter. Additional goals were (and are) both a smooth ride and a long-wearing surface, taking into account factors such as expense and availability of materials as well as local weather conditions.
Much effort goes into researching surfacing materials. Early highway engineers traveled to Europe, where road building had a longer tradition, to study their methods. There were suitable, long-lasting technologies developed in the 19th century but some were too expensive and labor intensive to be used for the thousands of miles of soon-to-be U.S. Highways in America. Examples of surfaces are dirt, gravel, planks, bricks, macadam, cement, Telford, asphalt.
Bricks and planks were used in special areas: bricks for a short stretch of attractive urban road, planks in very wet or sandy areas. Everything else started out as a dirt road. Gravel was the next step up, and what had been done underneath that top layer of grave (if anything) varied.
The Telford Process was invented by Thomas Telford in the early 1800s and probably was not used much out West. The road was first roughly graded and then edged by hand-placed stones. Base stones across the entire surface were also hand-placed. Then two layers of 2 1/2" stones were spread on the base and 1 1/2 inches of clean gravel on top of it all. This resulted in a very fine road indeed but imagine building 1,600 miles (the length of the Pacific Highway) of it!
A cheaper alternative was macadam, invented around the same time by Scotsman John McAdam. He placed more emphasis on good subsoil drainage to keep the roadbed firm, then topped it with a thinner layer of 2-inch stones. A coating of tar (source of the word "tarmac") made the road impervious and kept the subsoil in place.
Original concrete road by the newer version
Durable and attractive cement was the surfacing material of choice in the early highway era. A 1928 press release brags that all 1,590 miles of US99 (excepting 95 miles in California near the Oregon border and near the Mexican border) were paved, the vast majority of it in concrete. In the 1910s and 1920 it was a single slab of concrete 15 or 16 feet wide for two lands of traffic that was considered fantastically modern. By the 1930s, double slab was the norm, with either a second slab poured beside its older brother or side-by-side slabs poured on a new and better alignment. Triple slab showed up where a third passing lane (or "suicide lane") was deemed necessary.
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Would you like information about how to join them in advertising? Oliver-Hammer Clothes Shop at 817 Metcalf Street in downtown Sedro-Woolley, 90 years continually in business. Peace and quiet at the Alpine RV Park, just north of Marblemount on Hwy 20, day, week or month, perfect for hunting or fishing Park your RV or pitch a tent by the Skagit River, just a short drive from Winthrop or Sedro-Woolley — doubling in size for RVs and camping in 2011. Joy's Sedro-Woolley Bakery-Cafe at 823 Metcalf Street in downtown Sedro-Woolley. Check out Sedro-Woolley First section for links to all stories and reasons to shop here first or make this your destination on your visit or vacation. Are you looking to buy or sell a historic property, business or residence? We may be able to assist. Email us for details. |
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