Near Florence in Lane County, Oregon — The American West (Northwest)
A Sea-Sculptured Landscape
If this historic bridge and tunnel weren’t here, what would it be like to cross Cape Creek?
Engineers building the Pacific Coast Highway in the early 1930s encountered an unusual challenge here at Cape Creek, a deep, offset gorge, carved over thousands of years by the power of sea and creek.
Famed bridge designer Conde B. McCullough, a State Bridge Engineer, used both old and new technology to meet the challenge. His Cape Creek Bridge design is similar to Roman aqueducts, with two lower viaduct sections supporting a taller, open-spandrel deck arch.
McCullough used a cutting-edge technology in this Roman-inspired design: steel-reinforced concrete.
"You can't help but wonder how in the dickens the great state of Oregon wants to make an expenditure like this to cross a little creek which isn't more than knee deep."
The Siuslaw Oar, November 7, 1931
Topics. This historical marker is listed in these topic lists: Architecture • Bridges & Viaducts • Man-Made Features • Roads & Vehicles.
Location. Touch for map. Marker is in this post office area: Florence OR 97439, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within 12 miles of this marker, measured as the crow flies. Heceta Head Lightstation (about 600 feet away, measured in a direct line); Hard Work at a Lonely Light (approx. ¼ mile away); Road Behind And Sea Beyond (approx. 0.3 miles away); Designed for Seafarer Safety (approx. 0.4 miles away); A Battle With the Elements (approx. 0.4 miles away); Giant Spruce of Cape Perpetua (approx. 10.3 miles away); Harbor Theater (approx. 11.6 miles away); Welcome to Historic Old Town (approx. 11.6 miles away). Touch for a list and map of all markers in Florence.
Regarding Technology Spans. National Register of Historic Places (2005)
Related markers. Click here for a list of markers that are related to this marker.
Also see . . .
1. Highway 101 (Oregon Coast Highway).
Throughout the 1930s, the Oregon Department of Transportation and the U.S. Bureau of Public Roads worked to realign some sections of the highway. One was a picturesque five-mile section through rugged terrain north of Florence. It involved constructing (Submitted on January 27, 2018, by Cosmos Mariner of Cape Canaveral, Florida.)
2. Cape Creek Bridge.
The bridge resembles a Roman aqueduct, with a single parabolic arch that spans half its length. The Cape Creek Bridge has been impressed-current cathodically protected (ICCP) from corrosion since 1991. Rebar in concrete is highly susceptible to corrosion by chloride ions from seawater and de-icing salts. Contractors to the Oregon Department of Transportation have plasma-sprayed 102,000 square feet of 0.020-inch thick zinc onto the exposed concrete to provide a sacrificial anode that corrodes in lieu of the steel rebar. (Submitted on January 27, 2018, by Cosmos Mariner of Cape Canaveral, Florida.)
3. Cape Creek Bridge,... Florence, Lane County, OR (Historic American Buildings Survey). (Submitted on January 27, 2018.)
Credits. This page was last revised on February 11, 2018. It was originally submitted on January 25, 2018, by Cosmos Mariner of Cape Canaveral, Florida. This page has been viewed 94 times since then and 5 times this year. Photos: 1. submitted on January 25, 2018, by Cosmos Mariner of Cape Canaveral, Florida. 2, 3, 4. submitted on January 27, 2018, by Cosmos Mariner of Cape Canaveral, Florida. 5. submitted on January 28, 2018, by Cosmos Mariner of Cape Canaveral, Florida. 6, 7. submitted on January 27, 2018, by Cosmos Mariner of Cape Canaveral, Florida. 8. submitted on January 28, 2018, by Cosmos Mariner of Cape Canaveral, Florida. • Andrew Ruppenstein was the editor who published this page.