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Denver, Colorado. The interior of one of eight Colorado plants engaged in 56 million dollar ship-building program, showing workers who once made highway bridge girders, gold mining machinery and water culverts, laying out parts of an escort vessel. The parts will be assembled at Mare Island Navy Yard on the West coast

Substitute materials. Wood culverts for steel. Assembly of an emergency sectional wood pipe, twenty-four inches in diameter. These pipes, used in place of corrugated iron or reinforced concrete pipes, are made of sections cut from short lengths of wood. Locking of adjacent rings with hardwood dowel pins produces a flexible structure. About 100,000 feet of these wooden pipes were installed in 1942 in drainage culverts, storm sewers and conduits under highways and at army camps, naval stations, airfields and ordnance plants

Substitute materials. A shipment of 1,488 feet of 18-inch, 24-inch, 30-inch and 36-inch wooden pipe on one flat car. Weight 70,020 pounds. An equal footage of reinforced concrete pipe weighs 455,412 pounds, requires over ten cars. These pipes, used in place of corrugated iron or reinforced concrete pipes, are made of sections cut from short lengths of wood. Locking of adjacent rings with hardwood dowel pins produces a flexible structure. About 100,000 feet of these wooden pipes were installed in 1942 in drainage culverts, storm sewers and conduits, under highways and at army camps, naval stations, airfields and ordnance plants

Substitute materials. Interior view of two-foot section of built-up wooden pipe, twenty-four inches in diameter. These pipes, used in place of corrugated iron or reinforced concrete pipes, are made of sections cut from short lengths of wood. About 100,000 feet of these wooden pipes were installed in 1942 in drainage culverts, storm sewers and conduits under highways and at army camps, naval stations, airfields and ordnance plants

Culvert on Hinkey Summit Road

Culvert on Hinkey Summit Road

Conversation While Repairing Culvert at Home Ranch

Arch Culvert, Saint Clairsville, Belmont County, OH

Chesapeake & Ohio Canal, Culvert 39, Williamsport, Washington County, MD

Chesapeake & Ohio Canal, Culvert 200, 136 miles above tidewater, Hancock, Washington County, MD

Little Hunters Beach Brook Bridge, Spanning Little Hunters Beach Brook on Park Loop Road, Seal Harbor, Hancock County, ME

Sprague Creek Culvert, Spanning Sprague Creek at Going-to-the-Sun Road, West Glacier, Flathead County, MT

Siyeh Creek Culvert, Spanning Siyeh Creek at Going-to-the-Sun Road, West Glacier, Flathead County, MT

Roaches Run Culvert, Spanning Roaches Run, Arlington, Arlington County, VA

Haystack Creek Culvert, Spanning North gulch of Haystack Creek at Going-to-the-Sun Road, West Glacier, Flathead County, MT

Snyder Creek Culvert, Spanning Snyder Creek at Going-to-the-Sun Road, West Glacier, Flathead County, MT

Blue Ridge (C&O) Railroad, Culvert, South of U.S. Route 250, 2.2 miles Southeast of Waynesboro, Waynesboro, Waynesboro, VA

Chesapeake & Ohio Canal, Culvert above Lock 37, 67.07 miles above tidewater, Antietam, Washington County, MD

Chesapeake & Ohio Canal, Culvert 100, 74.01 miles above tidewater, Sharpsburg, Washington County, MD

Burlington Northern Santa Fe Railroad, Cajon Subdivision, Structure No. 66.0, Between Cajon Summit and Keenbrook, Devore, San Bernardino County, CA

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Burlington Northern Santa Fe Railroad, Cajon Subdivision, Structure No. 66.0, Between Cajon Summit and Keenbrook, Devore, San Bernardino County, CA

Burlington Northern Santa Fe Railroad, Cajon Subdivision, Structure No. 66.0, Between Cajon Summit and Keenbrook, Devore, San Bernardino County, CA

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI

Hana Belt Road, Between Haiku and Kaipahulu, Hana, Maui County, HI