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OR 99W Hoffman Road through the City of Monmouth

Project Completed

Region 2: Willamette Valley and Northwest Oregon (Monmouth, Polk)

​Repaving OR 99W and reconstructing the pedestrian access ramps and crosswalks. ​​​​​​​

Banner image: Building a modern transportation system to help Oregon’s communities and economy thrive. During construction, Give yourself more time -try a new way or mode to get there or take a different route!


Traffic Impact


  • Businesses access is being maintained during the project.

  • Pedestrian access is being maintained by using short detours as sidewalks are reconstructed.

  • Existing north and southbound vehicle lanes on the highway stay open during the project. 

  • Expect nighttime single lane closures.

Except where noted, work hours are at night from 7 p.m. Sundays to 6 a.m. Fridays. During these times, there may be single-lane closures with flaggers safely directing traffic. There may be intermittent travel delays during construction work hours. All lanes will be open by the morning commute.

Construction Impacts









Minimal, single-lane closures may occur during nighttime work hours (between 7 p.m. Sundays to 6 a.m. Fridays) as the contractor completes signal upgrades and final work.




Construction: Summer 2018 - Late 2019

Landscape replanting and traffic signal connection: August - December 2019

Access for pedestrians, including those with disabilities, will be available and identified through or around work zones.



​The purpose of the project is to replace the highway pavement that is in poor condition, and reconstruct the pedestrian access ramps and crosswalks so that they meet the current Americans with Disabilities Act (ADA) standards. 

This project will grind and repave OR 99W from Hoffman Road to the City of Monmouth's southern boundary (milepost 62 to 63.9), and rebuild the roadway from Jackson Street south to Madrona Avenue. This reconstruction will reduce highway crosswalk cross slopes to meet ADA standards at crosswalks.

Picture: Approximate Project Limits-Looking South from Hoffman Road.​​​​​


OR 99W |

​Hoffman Road to the City of Monmouth's southern boundary (milepost 62 to 63.9)

Cost and Funding

The project cost estimate is $14.8 million.

Additional Information

​This project will make upgrades to existing curb ramps and sidewalks along the highway in the City of Monmouth to meet current ADA accessibility standards.  The project will include striping bike lanes and installing landscaping between sidewalks and the highway from Church Street to Madrona Avenue. The project will also add a continuous two-way left turn lane between Church and Main Streets.
Typical Section of OR 99W
At the Main Street intersection:
  • The curb radiuses will be increased to accommodate turning for larger vehicles. The vehicles designed for include a municipal bus on the west leg, and a WB-67 (semi-trailer with a 67’ wheel base) to and from the east.
  • It is necessary to relocate and replace all of the traffic signals at the Main St. intersection to facilitate truck movement and improve operations at OR 99W at Main Street.
Other project elements include:
  • Placing a waterproof membrane on the bridge over the Middle Fork of Ash Creek and adding new guardrail.
  • Adding bioswales (large improved ditches) on the north and south sides of the city that will provide stormwater quality treatment for highway run-off.

Contacts & Media


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Project Contacts

Area 5 Manager
Vidal Francis

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Last Updated

9/19/2023 2:13 PM

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