Interstate 105 Oregon

History
East End
West End

Overview

Interstate 105 connects Oregon 99 outside Downtown Eugene with Interstate 5 and Oregon 126 (Eugene-Springfield Highway) at the Springfield city line. Following an L-shaped course, I-105 leads north from ramps with the couplets of 6th/7th Avenues and Jefferson/Washington Streets, where Oregon 99, 126 and 126 Business converge. The Washington-Jefferson Bridge spans the Willamette River into the trumpet interchange (Exit 1) with Delta Highway. I-105 & Oregon 126 (Pacific-Willamette Highway) turn east from there to Coburg Road and I-5.

History

Construction for Interstate 105 in Eugene, including the Washington-Jefferson Bridge started in the early 1960s. The freeway fully opened to traffic in 1970 without controversy, unlike the other proposed Interstate spurs in Oregon that were never built (I-305 and I-505).1

Costing $15 million, road construction (project #10349) in 2005 expanded Interstate 105 with auxiliary lanes in both directions between mileposts 0.89 to 3.95..2

Route Information

  • East End – Springfield, OR

  • West End – Eugene, OR

  • Mileage – 3.49

  • Cities – Eugene, Springfield

  • JunctionsI-5

Source: December 31, 2018 Interstate Route Log and Finders List

I-105 Annual Average Daily Traffic (AADT)

Highway Guides

East End I-5 Oregon 126 – Springfield, Oregon

Perspective from Interstate 105 & Oregon 126 east
I-105 & Oregon 126 advance one mile east from the Coburg Road interchange to Exits 4A/B for Interstate 5. Photo taken 04/01/05.
Eastbound Interstate 105 and Oregon 126 reach Exit 4A for I-5 south to Roseburg. Oregon 126 continues east with two lanes into the city of Springfield. Photo taken 04/01/05.
A left side ramp takes motorists north from I-105 and Oregon 126 to Salem, Portland and Seattle, Washington. Photo taken 04/01/05.
Perspective from Oregon 126 west
Westbound Oregon 126 (Eugene-Springfield Highway) navigates through an S-curve at the exchange with Pioneer Parkway preceding Interstate 5 (Exit 4) and I-105. Photo taken 04/01/05.
Exit 4B departs Oregon 126 north to Albany and Portland as Interstate 105 westbound begins. Photo taken 04/01/05.
Left Exit 4A follows from Interstate 105 and Oregon 126 (Eugene-Springfield Highway) west to I-5 south for Roseburg, Medford and Grants Pass. Photo taken 04/01/05.
Perspective from Interstate 5 north
A wye interchange (Exit 192) connects Interstate 5 north with Oregon 99 and 126 Business to the University of Oregon 1.25 miles south of I-105 west and Oregon 126. Photo taken 04/01/05.
Exit 194A departs Interstate 5 north for Oregon 126 east to Springfield. The Oregon 126 freeway extends 5.5 miles east from I-5/105 to 52nd Street. Photo taken 04/01/05.
Oregon 126 overlaps with Interstate 105 west to Oregon 99 in Downtown. The state route continues west from Eugene to Florence and U.S. 101 near the Pacific coastline. Photo taken 04/01/05.
Perspective from Interstate 5 south
Construction underway in 2014-15 reconfigured the exchange with Oregon 569 (Randy Papé Beltline) west and Beltline Road east. I-5 proceeds south Exit 195 to Inerstate 105 and Oregon 126. Photo taken 04/01/05.
Entering the directional cloverleaf interchange (Exit 194) with Interstate 105 & Oregon 126 west to Eugene and Oregon 126 east to Springfield on I-5 southbound. Photo taken 04/01/05.

West End Oregon 126 Oregon 126 Business – Eugene, Oregon

Perspective from Interstate 105 & Oregon 126 west
I-105 & Oregon 126 run along the north side of the Willamette River to a trumpet interchange (Exit 1) with Delta Highway. Delta Highway is a freeway leading north to Oregon 569 (Randy Papé Beltline). Photo taken 04/01/05.
Interstate 105 and Oregon 126 turn south from Delta Highway across cross the Washington-Jefferson Bridge over the Willamette River. The final exit departs in one half mile for the continuation of Oregon 126 west along 6th Avenue (Oregon 99 north). Photo taken 04/01/05.
Approaching the couplet of Oregon 99 along 6th and 7th Avenues, I-105 & Oregon 126 elevate along a viaduct system to the northwest of Downtown Eugene. Photo taken 04/01/05.
Oregon 99 and Oregon Business 126 overlap along 7th Avenue east through Downtown Eugene, while Oregon 99 and Oregon 126 combine northwest northwest toward Florence and Junction City. Photo taken 04/01/05.
Interstate 105 lowers to a signalized intersection with Oregon 99 (7th Avenue) at Jefferson Street. Photo taken 04/01/05.
Jefferson Street continues south from the end of I-105 and Oregon 99 (7th Avenue) toward the Lane County Fairgrounds. Photo taken 04/01/05.
Perspective from Oregon 99 south & Oregon 126 east – 7th Avenue
Oregon 99-126 (7th Avenue) east approach the couplet of Jefferson and Washington Streets, where Interstate 105 eastbound begins. Photo taken 04/01/05.
Oregon 126 turns north along side I-105 to cross the Willamette River en route to Springfield via the Eugene-Springfield Highway. Oregon 99 continues east along 7th Avenue into Downtown Eugene. Photo taken 04/01/05.
Perspective from Oregon 99 north & Oregon 126 Business west – 6th Avenue
Oregon 99 and Oregon 126 Business follow 6th Avenue west from Coburg Road through the Eugene city center. I-105 branches north from 6th Avenue three blocks beyond Olive Street here. to Interstate 105 at Lawrence Street. Photo taken 04/01/05.
Forthcoming Interstate 105 leads north to Delta Highway at Valley River Center mall. A direct ramp to the I-105 & Oregon 126 viaduct system departs from 6th Avenue west at Lawrence Street. Photo taken 04/01/05.
Oregon 99/126 Business split with the entrance ramp for I-105/Oregon 126 across the Washington-Jefferson Bridge. Oregon 126 Business ends just beyond the I-105 viaducts at Madison Street. Photo taken 04/01/05.
Perspective from Washington Street north
Washington Street intersects Oregon 99/126 Business (7th Avenue) eastbound at the ramp for Interstate 105 and Oregon 126 a block and a half beyond this overhead assembly. Photo taken 04/01/05.
Washington Street partitions with the northbound beginning of Interstate 105 at 7th Avenue (Oregon 99 south & 126 Business east). Photo taken 04/01/05.

Sources:

  1. Interstate 50th Anniversary: The Story of Oregon’s Interstates.
  2. http://egov.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/docs/Historic_Bridge/Willamette_Fremont_Bridge.doc

Page updated February 28, 2019.