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Conde B. McCullough

of Redfield, South Dakota
View Exhibit map

Conde Balcom McCullough (1887-1946) was the notable State Bridge Engineer for the Oregon State Highway Department from 1919 to 1935. During McCullough’s tenure as bridge engineer, Oregon developed one of the most impressive collections of beautiful and efficient bridge in the United States.

McCullough began his career designing bridges under another notable engineer, James B. Marsh and his Marsh Engineering Company. After a year working for Marsh, McCullough joined the Iowa State Highway Commission where he developed bridge design standards and assisted in designing bridge throughout Iowa. During this time McCullough served as an expert witness during patent infringement lawsuits between Daniel Luten and Marsh.

McCullough was appointed the Oregon State Bridge Engineer in 1919 after a short stint at Oregon Agricultural College as a professor. As the State Bridge Engineer for the Oregon State Highway Department, McCullough brought forth a three part philosophy to bridge design. His three major points were to make the structure fit the site in which it was being built, have the bridge be cost effective, and finally he emphasized building structures that were pleasing to the eye.

McCullough is most widely known for his work with reinforced concrete arch bridges. McCullough assisted in pioneering different design and construction methods in concrete arch construction, along with writing text books on the subject of concrete arch design. Some of his most notable reinforced concrete arch bridges include the Rogue River Bridge in Gold Beach and the Winchester Bridge in Roseburg.

McCullough’s most recognizable accomplishment was managing the design and construction of the bridges on the Oregon Coast Highway. Over the course of two years McCullough’s staff completed the design and construction of five major coastal crossing all measuring between 1600 to 5400 feet in length. The bridges were designed with many of the architectural details that have made McCullough’s bridge some of the most beautiful in the world.

After the completion of the coastal bridges McCullough left Oregon to design bridges on the Pan-American Highway in Central America for the Bureau of Public Roads. McCullough gave up his position as state bridge engineer but upon his return he served Oregon as the Assistant Highway Engineer until is untimely death in 1946.

The legacy McCullough left still lives in the design and maintenance of Oregon Bridges. Oregon is one of the leaders in historic bridge preservation along with creating innovative and eye pleasing structures to replace aging structures of McCullough's era. In 1947 the longest of McCullough’s coastal bridges, the Coos Bay Bridge in North Bend was dedicated the Conde McCullough Memorial Bridge in honor of McCullough.

ENGINEERING HISTORY:

- Bridge Designer, Marsh Engineering Company (1910-1911)

- Bridge Engineer, Iowa State Highway Commission (1911-1916)

- Assistant Professor, Oregon Agricultural College (1916-1919)

- State Bridge Engineer, Oregon Highway Department (1919-1936)

- Bridge Engineer, U.S. Bureau of Public Roads, Pan-Am Highway (1936-1937)

- Assistant State Highway Engineer, Oregon Highway Department (1932-1946)

CONDE B. MCCULLOUGH INFORMATION:

Wikipedia: http://en.wikipedia.org/wiki/Conde_McCullough

Oregon Coastal Bridge Brochure: http://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/docs/Histori...

SOURCES:

Elegant Arches Soaring Spans, Robert W. Hadlow, OSU Press, 2001

Historic Highway Bridges of Oregon, Dwight A. Smith, Oregon Historic Society Press, 1989


180th Street Bridge (Carroll County, Iowa)
Consulting Engineer for ISHC, 1913
Lost pony truss bridge over Storm Creek on 180th Street
Replaced by new bridge

Adkisson Bridge (Wasco County, Oregon)
Bridge Engineer, 1925
Concrete arch bridge over Fifteen Mile Creek on Boyd Loop Road
Open to traffic

Agency Creek Bridge (Yamhill County, Oregon)
Bridge Engineer, 1929
Concrete deck girder bridge over Agency Creek on OR 22
Open to traffic

Alder Creek Bridge (Baker County, Oregon)
Bridge Engineer, 1929
Concrete tee beam bridge over Alder Creek on Old U.S. 30
Open to traffic

Alsea Bay Bridge (Lincoln County, Oregon)
Bridge Engineer, 1936
Lost concrete tied arch bridge over Alsea Bay on U.S. 101 in Waldport
Replaced by new Alsea Bay Bridge in 1991

Applegate Bridge (Jackson County, Oregon)
Bridge Engineer, 1934
Parker through truss bridge over Applegate River on OR 238
Open to traffic

Ball Park Bridge (Umatilla County, Oregon)
Bridge Engineer, 1935
Concrete deck girder bridge over Umatilla River on US 30
Open to traffic

Barton Bridge (Clackamas County, Oregon)
Tied Arch Bridge Engineer, 1970
Steel tied arch bridge over Clackamas River on Bakers Ferry Road
Open to traffic

Ben Jones Bridge (Lincoln County, Oregon)
Bridge Engineer, 1927
Concrete arch bridge over Rocky Creek on Otter Crest Loop
Open to traffic

Bidwell Road Bridge (Baker County, Oregon)
Bridge Engineer, 1929
Pratt pony truss bridge over North Powder River on Bidwell Road in North Powder
Open to traffic

Big Creek Bridge (Lane County, Oregon)
Bridge Engineer, 1931
Reinforced concrete tied arch bridge over Big Creek on US 101
Open to traffic

Blue River Bridge (Lane County, Oregon)
Bridge Engineer, 1928
Concrete deck girder bridge over Blue River on Blue River Drive
Open to traffic

Bridge Creek Bridge (Wheeler County, Oregon)
Bridge Engineer, 1929
Concrete stringer bridge over Bridge Creek on East Main Street (Old US 26/28)
Open to traffic

Burnt River Bridge (Baker County, Oregon)
Bridge Engineer, 1922
Parker through truss bridge over Burnt River on US 30
Replaced by a new bridge

Burnt River Bridge (Baker County, Oregon)
Bridge Engineer, 1934
Steel stringer bridge over Burnt River on Old US 30
Open to traffic

Cape Creek Bridge (Lane County, Oregon)
Bridge Engineer, 1931
Concrete arch bridge over Cape Creek on US 101
Open to traffic

Carver Bridge (Clackamas County, Oregon)
1930 - Bridge Engineer, 1930
Parker through truss bridge over Clackamas River on South Springwater Road
Replaced by a new bridge in 2013

Cascadia Park Bridge (Linn County, Oregon)
1928 - Bridge Engineer, 1928
Timber Howe deck truss bridge over South Santiam River on Cascadia Drive
Open to traffic

Caveman Bridge (Josephine County, Oregon)
Bridge Engineer, 1927
Rainbow arch bridge over Rogue River on Southbound US 199 in Grants Pass
Open to traffic

Conde B. McCullough Memorial Bridge (Coos County, Oregon)
Lead Bridge Engineer, 1936
Steel cantilevered through truss bridge over Coos Bay on US 101 in North Bend
Open to traffic

Coquille River Bridge (Coos County, Oregon)
Bridge Engineer, 1922
Lost swing span bridge over Coquille River on OR-42S (Fromerly US 101) in Coquille
Removed and salvaged in 1993

Crooked River Bridge (Jefferson County, Oregon)
Bridge Engineer, 1926
Steel arch bridge over Crooked River on Former U.S. 97 alignment in Terrebonne
Open to pedestrians

Cummins Creek Bridge (Lane County, Oregon)
Bridge Engineer, 1931
Concrete arch bridge over Cummings Creek on US 101
Open to traffic

Dairy Overcrossing (Klamath County, Oregon)
Bridge Engineer, 1936
Lost concrete deck girder bridge over OC&E Trail (Formerly Oregon California & Eastern Railroad) on Oregon Route 140
Replaced by a pre-cast concrete girder bridge in 2011

Deer Creek Bridge (Douglas County, Oregon)
Bridge Engineer, 1927
Concrete stringer bridge over Deer Creek on Jackson Street
Open to traffic

Depoe Bay Bridge (Lincoln County, Oregon)
Bridge Engineer, 1927
Concrete arch bridge over Depoe Bay on US 101 in Depoe Bay
Open to traffic

Deschutes River Bridge (Wasco County, Oregon)
Bridge Engineer, 1929
Warren deck truss bridge over Deschutes River on US 197 in Maupin
Open to traffic

Dr. John McLoughlin Memorial Bridge (Clackamas County, Oregon)
Bridge Engineer, 1932
Steel tied arch bridge over Clackamas River on OR 99E in Gladstone
Open to traffic

Dry Canyon Creek Bridge (Wasco County, Oregon)
Bridge Engineer, 1921
Concrete arch bridge over Dry Canyon Creek on Historical Columbia River Highway
Open to traffic

Eagle Creek Bridge (Multnomah County, Oregon)
Bridge Engineer, 1936
Lost steel tied arch bridge over Eagle Creek on US 30
Replaced by a steel plate girder bridge in 1969

Elk Creek Bridge No. 1 (Douglas County, Oregon)
Bridge Engineer, 1931
Lost Warren deck truss bridge over Elk Creek on OR 38
Replaced by new bridge in 2008

Elk Creek Bridge No. 2 (Douglas County, Oregon)
Bridge Engineer, 1932
Lost Stringer bridge over Elk Creek on Or 38 (Hwy 045)
Replaced by new bridge in 2008

Elk Creek Bridge No. 3 (Douglas County, Oregon)
Bridge Engineer, 1932
Lost Warren deck truss bridge over Elk Creek on OR 38
Replaced by new bridge in 2008

Elk Creek Bridge No. 4 (Douglas County, Oregon)
Bridge Engineer, 1931
Lost Warren deck truss bridge over Elk Creek on OR 38
Replaced by new bridge in 2008

Ellsworth Street Bridge (Benton County, Oregon)
Bridge Engineer, 1926
Parker through truss bridge over Willamette River on Eastbound US 20 in Albany
Open to traffic

Estacada Bridge (Clackamas County, Oregon)
Bridge Engineer, 1936
Concrete arch bridge over Clackamas River on OR 211 (HWY 161) in Estacada
Open to traffic

Euchre Creek Bridge (Curry County, Oregon)
Bridge Engineer, 1927
Concrete deck girder bridge over Euchre Creek on Ophir Road (Old U.S. 101)
Open to traffic

Foots Creek Bridge (Jackson County, Oregon)
Bridge Engineer, 1928
Concrete tee beam bridge over Foots Creek on OR 99 (Old U.S. 99)
Open to traffic

Gales Creek Bridge (Washington County, Oregon)
Bridge Enginner, 1936
Steel stringer bridge over Gales Creek on Timber Road
Open to traffic

Gnat Creek Bridge (Clatsop County, Oregon)
Bridge Engineer, 1929
Concrete stringer bridge over Gnat Creek on US 30
Open to traffic

Gold Hill Bridge (Jackson County, Oregon)
Bridge Engineer, 1927
Concrete arch bridge over Rogue River on OR 99 at Gold Hill
Open to traffic

Grave Creek Covered Bridge 37-17-01 (Josephine County, Oregon)
Bridge Engineer, 1920
Covered bridge over Grave Creek on Sunny Valley Loop
Open to traffic

Hood River Bridge (Hood River County, Oregon)
Built 1919
Lost Open-spandrel arch bridge over Hood River on Columbia River Highway
Replaced by new bridge

Hunter Creek Bridge (Curry County, Oregon)
Bridge Engineer, 1928
Concrete tee-beam bridge over Hunter Creek on Hunter Creek Road (Old U.S. 101)
Open to traffic

Indian Creek Bridge (Lane County, Oregon)
Bridge Engineer, 1929
Concrete stringer bridge over Indian Creek on OR 36
Open to traffic

Isaac Lee Patterson Bridge (Curry County, Oregon)
Bridge Engineer, 1930
Concrete arch bridge over Rogue River on US 101 in Gold Beach
Open to traffic

Isthmus Slough Bridge (Coos County, Oregon)
Bridge Engineer, 1931
Bascule bridge over Isthmus Slough on Coos River Highway
Open to traffic

Jacks Bridge (Marion County, Oregon)
Bridge Engineer, 1931
Concrete stringer bridge over Butte Creek on OR 213


Jacob Conser Bridge (Marion County, Oregon)
Bridge Engineer, 1933
Rainbow arch bridge over Santiam River on HWY 164
Open to traffic

Keigley Branch Bridge (Story County, Iowa)
Guidance for the ISHC, 1913
Concrete arch bridge over Keigley Branch on 550th Avenue
Open to traffic

Keno Bridge (Klamath County, Oregon)
Bridge Engineer, 1930
Lost Concrete through arch bridge over Klamath River on Green Springs Highway (OR-66) in Keno
Replaced by new bridge

Lewis & Clark River Bridge (Clatsop County, Oregon)
Bridge Engineer, 1924
Bascule lift bridge over Lewis & Clark River on Business US 101
Open to traffic

Little Nestucca River Bridge (Tillamook County, Oregon)
Bridge Engineer, 1934
Polygonal Warren pony truss bridge over Little Nestucca River on OR 130
Open to traffic

Luckiamute River Bridge (Polk County, Oregon)
Bridge Engineer, 1928
Polygonal Warren truss bridge over Luckiamute River on Helmick Road (Old US-99W)
Open to traffic

Marys River Bridge (Benton County, Oregon)
Bridge Engineer, 1933
Parker through truss bridge over Marys River on Northbound OR 99W in Corvallis
Open to traffic

Middle Fork Coquille River Covered Bridge 37-10-29x (Douglas County, Oregon)
Bridge Engineer, 1922
Lost covered Howe through truss bridge over Middle Fork Coquille River on OR 42
Replaced by new bridge

Mill Creek Bridge (Wasco County, Oregon)
Bridge Engineer, 1920
Stringer bridge over Mill Creek on W 6th Street in City of the Dalles
Open to traffic

Miller's Gulch Bridge (Jackson County, Oregon)
Bridge Engineer, 1920
Concrete tee beam bridge over Miller's Gulch on OR 99 (Old U.S. 99)
Open to traffic

Mohler Bridge (Tillamook County, Oregon)
Bridge Engineer, 1926
Polygonal Warren pony truss bridge over South Fork Nehalem River on OR 53
Open to traffic

Molalla River Bridge (Clackamas County, Oregon)
Bridge Engineer, 1936
Warren deck truss bridge over Molalla River on Northbound OR-99 E
Open to traffic

Mosier Creek Bridge (Wasco County, Oregon)
Bridge Engineer, 1920
Concrete arch bridge over Mosier Creek on HWY 100 in Mosier
Open to traffic

Mosier Twin Tunnels (Wasco County, Oregon)
Design Engineer, 1920
Tunnel under Mosier Tunnel on Historical Columbia River Highway Trail
Open to pedestrians

Myers Creek Bridge (Curry County, Oregon)
Bridge Engineer, 1924
Concrete tee beam bridge over Myers Creek on Meyers Creek Road (Old US 101)
Open to traffic

Myrtle Creek Bridge (Douglas County, Oregon)
Bridge Engineer, 1922
Concrete arch bridge over South Umpqua River on CR 386 in Myrtle Creek
Open to traffic

Neawanna Creek Bridge (Clatsop County, Oregon)
Bridge Engineer, 1930
Concrete deck girder bridge over Neawanna Creek on U.S. 101 in Seaside
Open to traffic

Nehalem River Bridge (Tillamook County, Oregon)
Bridge Engineer, 1922
Lost swing bridge over Nehalem River
No longer exists

North Bend Overcrossing (Coos County, Oregon)
Bridge Engineer, 1935
Concrete tee beam bridge over Coos Bay Rail Link on US 101
Open to traffic

North Fork Alsea River Bridge (Benton County, Oregon)
Bridge Engineer, 1927
Polygonal Warren pony truss bridge over North Fork Alsea River on OR 34
Open to traffic

North Fork Butter Creek Bridge (Umatilla County, Oregon)
Bridge Engineer, 1926
Lost Stringer bridge over North Fork Butter Creek on OR 74
Replaced by pre-cast concrete girder bridge in 2003

North Fork Klaskanine River Bridge (Clatsop County, Oregon)
Bridge Engineer, 1934
Steel stringer bridge over North Fork Klaskanine River on OR 202
Open to traffic

North Fork Necanicum River Bridge (Clatsop County, Oregon)
Assistant Highway Engineer, 1942
Concrete deck girder bridge over North Fork Necanicum River on US-26
Open to traffic

North Yamhill River Bridge (Yamhill County, Oregon)
Bridge Engineer, 1921
Warren deck truss bridge over North Yamhill River on Southbound OR 99W
Open to traffic

Oakland Bridge (Douglas County, Oregon)
Bridge Engineer, 1925
Deck truss bridge over Calapooya Creek on Shady Highway in Oakland
Open to traffic

Oregon City Bridge (Clackamas County, Oregon)
Bridge Engineer, 1922
Steel through arch bridge over Willamette River on OR-43 in Oregon City
Open to traffic

Oswego Creek Bridge (Clackamas County, Oregon)
Bridge Engineer, 1920
Concrete arch bridge over Oswego Creek on OR 43 in Lake Oswego
Open to traffic

Park Place Bridge (Clackamas County, Oregon)
Bridge Engineer, 1921
Parker through truss bridge over Clackamas River on Abandoned 82nd Ave. Bike Path
Open to pedestrians

Powder River Bridge (Baker County, Oregon)
Bridge Engineer, 1922
Concrete tee beam bridge over Powder River on Abandoned OR-7
Abandoned but accessible to vehicles

Powers Bridge (Coos County, Oregon)
Bridge Engineer, 1934
Warren deck truss bridge over South Fork Coquille River on Powers Highway in Powers
Open to traffic

Rhea Creek Bridge (Morrow County, Oregon)
Bridge Engineer, 1935
Concrete tee beam bridge over Rhea Creek on OR 206
Open to traffic

Rhinehart Bridge (Union County, Oregon)
Bridge Engineer, 1922
Warren deck truss bridge over Grande Ronde River and Idaho Northern and Pacific Railroad on Abandoned OR-82 Alignment
Closed to all traffic

Ritter Bridge (Grant County, Oregon)
Bridge Engineer, 1934
Lost Warren deck truss bridge over Middle Fork John Day River on US 395
Replaced by a pre-cast concrete girder bridge in 2004

Rock Creek Bridge (Columbia County, Oregon)
Bridge Engineer, 1930
Concrete stringer bridge over Rock Creek on OR 47 in Vernonia
Open to traffic

Rock Point Bridge (Jackson County, Oregon)
Bridge Engineer, 1919
Concrete arch bridge over Rogue River on OR 99
Open to traffic

Salmon River Bridge (Clackamas County, Oregon)
Bridge Engineer, 1929
Warren deck truss bridge over Salmon River on E. Brightwood Loop
Open to traffic

Scottsburg Bridge (Douglas County, Oregon)
Bridge Engineer, 1929
Continuous Warren through truss bridge over Umpqua River on OR 38
Open to traffic

Seufert Viaduct (Wasco County, Oregon)
Bridge Engineer, 1920
Stringer bridge over Fifteen Mile Creek on Viewpoint Road (Historical Columbia River Highway) in The Dalles
Open to traffic

Sherars Bridge (Wasco County, Oregon)
Bridge Engineer, 1922
Lost Warren deck truss bridge over Deschutes River on OR 216
Replaced by new bridge

Siuslaw River Bridge (Lane County, Oregon)
Bridge Engineer, 1936
Bascule bridge over Siuslaw River on US 101 in Florence
Open to traffic

Skiberene Bridge (Clatsop County, Oregon)
Bridge Engineer, 1930
Concrete deck girder bridge over Necanicum River on U.S. 101/U.S. 26
Open to traffic

Soapstone Creek Bridge (Clatsop County, Oregon)
Bridge Engineer, 1928
Concrete arch bridge over Soapstone Creek on OR 53
Open to traffic

South Slough Bridge (Coos County, Oregon)
Bridge Engineer, 1934
Lost through truss swing span bridge over South Slough on Cape Arago Highway
Replaced by a new bridge

South Yamhill River Bridge (Yamhill County, Oregon)
Bridge Engineer, 1929
Concrete deck girder bridge over South Yamhill River on OR 22
Open to traffic

Spanish Hollow Bridge (Sherman County, Oregon)
Bridge Engineer, 1935
Concrete stringer bridge over Spanish Hollow Creek on Biggs-Rufus Highway (Old U.S. 30) in Biggs
Open to traffic

Springfield Bridge (Lane County, Oregon)
Bridge Engineer, 1929
Continuous Warren through truss bridge over Willamette River on Westbound OR 126 in Springfield
Open to traffic

Storm Creek Bridge (Carroll County, Iowa)
Consulting Engineer for ISHC, 1913
Lost pony truss bridge over Storm Creek on 190th
Replaced by a new bridge

Tenmile Creek Bridge (Lane County, Oregon)
Bridge Engineer, 1931
Rainbow arch bridge over Tenmile Creek on US 101
Open to traffic

Tide Creek Bridge (Columbia County, Oregon)
Bridge Engineer, 1920
Stringer bridge over Tide Creek on U.S. 30 Frontage Road
Open to traffic

Tualatin River Bridge (Washington County, Oregon)
Bridge Engineer, 1929
Warren deck truss bridge over Tualatin River on OR 99W SB in Tualatin
Open to traffic

Tucker Bridge (Hood River County, Oregon)
Bridge Engineer, 1932
Concrete arch bridge over Hood River on HWY 281
Open to traffic

Umatilla River Bridge (Umatilla County, Oregon)
1925 Bridge Engineer, 1925
Concrete arch bridge over Umatilla River on US 730 in Umatilla
Open to traffic