Glenn L. Jackson Memorial Bridge

Glenn Jackson Memorial Bridge
Aerial view, looking north
Coordinates	45°35′35″N 122°32′55″W / 45.59306°N 122.54861°W / 45.59306; -122.54861Coordinates: 45°35′35″N 122°32′55″W / 45.59306°N 122.54861°W / 45.59306; -122.54861
Carries	Interstate 205
Crosses	Columbia River
Locale	Portland, Oregon to Vancouver, Washington
Characteristics
Design	Concrete segmental bridge
Longest span	600 ft (183 m)
Clearance below	144 ft (43.9 m)
History
Opened	December 15, 1982
Statistics
Daily traffic	137,000
Glenn Jackson Memorial Bridge Location in Portland, Oregon

The Glenn L. Jackson Memorial Bridge, or I-205 bridge, is a segmental bridge that spans the Columbia River between Vancouver, Washington and Portland, Oregon.

Planning for the structure began in earnest in 1964 when it was designated as part of the East Portland Freeway (later renamed Veteran's Memorial Freeway), Interstate 205. Construction began in August 1977. In order to avoid disrupting river traffic, the bridge was built one segment at a time. The segments, weighing upwards of 200 tons, were cast 4 miles (6.4 km) downstream and barged into place. The bridge was opened on December 15, 1982.^[1] The finished project cost was $169.6 million: $155.7 million from Federal funds, $4 million from Washington state funds and $9.9 million from Oregon state funds.^[2] Three men died during its construction.

It is a twin structure with four lanes in each direction and a 9-foot (2.7 m) wide bicycle and pedestrian path in between. The bridge is 7,460 ft (2,270 m) long from the Washington side of the river to Government Island and another 3,120 ft (951 m) in length from Government Island to the Oregon side of the river. The main span, near the Washington side, is 600 ft (183 m) long with 144 ft (44 m) of vertical clearance at low river levels. The bridge was named for Glenn Jackson, the chairman of the Oregon State Highway Commission and later the Oregon Economic Development Commission.^[3] The average daily traffic during 2013 was 142,000 vehicles.^[4]

Under construction, looking east from the Columbia River around 1980-81

References

↑ Callister, Scotta (December 16, 1982). "Rain fails to faze bridge-crossers". The Oregonian, p. E12.
↑ Federal-aid Project No. I-205-7(85)315 Contract 8526; Federal-aid Project No. I-205-7(65)314 Contract 8862; Federal-aid Project No. I-205-7(66)315 Contract 8905; Federal-aid Project No. I-205-7(85)314 Contract 9510; Federal-aid Project No. I-205-7(84)314 Contract 9444; Federal-aid Project No. I-205-1(121)0 Washington Approach Contract
↑ Russell Sadler (February 5, 2005). "A Recent History of Oregon's Citizen Boards and Commissions". West by Northwest.
↑ "Average Daily Traffic on Oregon Roads 2013" (PDF). Oregon Department of Transportation. Retrieved 2015-02-27.

Sharon Wood (2001). The Portland Bridge Book. Portland, Oregon: Oregon Historical Society. ISBN 0-87595-211-9.

External links

Media related to Glenn Jackson Bridge at Wikimedia Commons

Bridges in the metropolitan area of Portland, Oregon

Across the Willamette River (north to south)	St. Johns Bridge Burlington Northern Railroad Bridge 5.1 Fremont Bridge Broadway Bridge Steel Bridge Burnside Bridge Morrison Bridge Hawthorne Bridge Marquam Bridge Tilikum Crossing Ross Island Bridge Sellwood Bridge Lake Oswego Railroad Bridge Abernethy Bridge Oregon City Bridge Boone Bridge

Across the Columbia River (west to east)	Burlington Northern Railroad Bridge 9.6 Interstate Bridge Glenn L. Jackson Memorial Bridge

Miscellaneous	Blue Bridge (Reed College) Bybee Bridge Gibbs Street Pedestrian Bridge (across I-5) Main Street Bridge (MAX in Hillsboro) Oregon Slough Railroad Bridge (North Portland Harbor) Sauvie Island Bridge (Multnomah Channel) Vista Bridge (Goose Hollow)

See also: Transportation in Portland, Oregon List of crossings of the Columbia River List of crossings of the Willamette River

Crossings of the Columbia River

Upstream
Bonneville Dam

Glenn L. Jackson Memorial Bridge

Downstream
Interstate Bridge

Freeways in the Portland Metropolitan Area

Radial	Interstate 5 Interstate 84 (west) Sunset Highway (portion of US-26) WA-14 US-30

Circumferential	Interstate 205 Interstate 405 OR-217 WA-500

Bridges	Interstate Bridge Glenn L. Jackson Memorial Bridge Fremont Bridge Marquam Bridge Abernethy Bridge Boone Bridge

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